Context:
# Copyright 2009-2012 10gen, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Tools for representing files stored in GridFS."""

import datetime
import math
import os

from bson.binary import Binary
from bson.objectid import ObjectId
from bson.py3compat import b, binary_type, string_types, text_type, StringIO
from gridfs.errors import (CorruptGridFile,
                           FileExists,
                           NoFile,
                           UnsupportedAPI)
from pymongo import ASCENDING
from pymongo.collection import Collection
from pymongo.errors import DuplicateKeyError

try:
    _SEEK_SET = os.SEEK_SET
    _SEEK_CUR = os.SEEK_CUR
    _SEEK_END = os.SEEK_END
# before 2.5
except AttributeError:
    _SEEK_SET = 0
    _SEEK_CUR = 1
    _SEEK_END = 2

EMPTY = b("")
NEWLN = b("\n")

"""Default chunk size, in bytes."""
DEFAULT_CHUNK_SIZE = 256 * 1024

def _create_property(field_name, docstring,
                      read_only=False, closed_only=False):
    """Helper for creating properties to read/write to files.
    """
    def getter(self):
        if closed_only and not self._closed:
            raise AttributeError("can only get %r on a closed file" %
                                 field_name)
        # Protect against PHP-237
        if field_name == 'length':
            return self._file.get(field_name, 0)
        return self._file.get(field_name, None)

    def setter(self, value):
        if self._closed:
            self._coll.files.update({"_id": self._file["_id"]},
                                    {"$set": {field_name: value}},
                                    **self._coll._get_wc_override())
        self._file[field_name] = value

    if read_only:
        docstring = docstring + "\n\nThis attribute is read-only."
    elif closed_only:
        docstring = "%s\n\n%s" % (docstring, "This attribute is read-only and "
                                  "can only be read after :meth:`close` "
                                  "has been called.")

    if not read_only and not closed_only:
        return property(getter, setter, doc=docstring)
    return property(getter, doc=docstring)

class GridIn(object):
    """Class to write data to GridFS.
    """
    def __init__(self, root_collection, **kwargs):
        """Write a file to GridFS

        Application developers should generally not need to
        instantiate this class directly - instead see the methods
        provided by :class:`~gridfs.GridFS`.

        Raises :class:`TypeError` if `root_collection` is not an
        instance of :class:`~pymongo.collection.Collection`.

        Any of the file level options specified in the `GridFS Spec
        <http://dochub.mongodb.org/core/gridfsspec>`_ may be passed as
        keyword arguments. Any additional keyword arguments will be
        set as additional fields on the file document. Valid keyword
        arguments include:

          - ``"_id"``: unique ID for this file (default:
            :class:`~bson.objectid.ObjectId`) - this ``"_id"`` must
            not have already been used for another file

          - ``"filename"``: human name for the file

          - ``"contentType"`` or ``"content_type"``: valid mime-type
            for the file

          - ``"chunkSize"`` or ``"chunk_size"``: size of each of the
            chunks, in bytes (default: 256 kb)

          - ``"encoding"``: encoding used for this file. In Python 2,
            any :class:`unicode` that is written to the file will be
            converted to a :class:`str`. In Python 3, any :class:`str`
            that is written to the file will be converted to
            :class:`bytes`.

        If you turn off write-acknowledgment for performance reasons, it is
        critical to wrap calls to :meth:`write` and :meth:`close` within a
        single request:

           >>> from pymongo import MongoClient
           >>> from gridfs import GridFS
           >>> client = MongoClient(w=0) # turn off write acknowledgment
           >>> fs = GridFS(client)
           >>> gridin = fs.new_file()
           >>> request = client.start_request()
           >>> try:
           ...     for i in range(10):
           ...         gridin.write('foo')
           ...     gridin.close()
           ... finally:
           ...     request.end()

        In Python 2.5 and later this code can be simplified with a
        with-statement, see :doc:`/examples/requests` for more information.

        :Parameters:
          - `root_collection`: root collection to write to
          - `**kwargs` (optional): file level options (see above)
        """
        if not isinstance(root_collection, Collection):
            raise TypeError("root_collection must be an "
                            "instance of Collection")

        # Handle alternative naming
        if "content_type" in kwargs:
            kwargs["contentType"] = kwargs.pop("content_type")
        if "chunk_size" in kwargs:
            kwargs["chunkSize"] = kwargs.pop("chunk_size")

        # Defaults
        kwargs["_id"] = kwargs.get("_id", ObjectId())
        kwargs["chunkSize"] = kwargs.get("chunkSize", DEFAULT_CHUNK_SIZE)

        root_collection.chunks.ensure_index([("files_id", ASCENDING),
                                             ("n", ASCENDING)],
                                            unique=True)
        object.__setattr__(self, "_coll", root_collection)
        object.__setattr__(self, "_chunks", root_collection.chunks)
        object.__setattr__(self, "_file", kwargs)
        object.__setattr__(self, "_buffer", StringIO())
        object.__setattr__(self, "_position", 0)
        object.__setattr__(self, "_chunk_number", 0)
        object.__setattr__(self, "_closed", False)

    @property
    def closed(self):
        """Is this file closed?
        """
        return self._closed

    _id = _create_property("_id", "The ``'_id'`` value for this file.",
                            read_only=True)
    filename = _create_property("filename", "Name of this file.")
    name = _create_property("filename", "Alias for `filename`.")
    content_type = _create_property("contentType", "Mime-type for this file.")
    length = _create_property("length", "Length (in bytes) of this file.",
                               closed_only=True)
    chunk_size = _create_property("chunkSize", "Chunk size for this file.",
                                   read_only=True)
    upload_date = _create_property("uploadDate",
                                    "Date that this file was uploaded.",
                                    closed_only=True)
    md5 = _create_property("md5", "MD5 of the contents of this file "
                            "(generated on the server).",
                            closed_only=True)

    def __getattr__(self, name):
        if name in self._file:
            return self._file[name]
        raise AttributeError("GridIn object has no attribute '%s'" % name)

    def __setattr__(self, name, value):
        # For properties of this instance like _buffer, or descriptors set on
        # the class like filename, use regular __setattr__
        if name in self.__dict__ or name in self.__class__.__dict__:
            object.__setattr__(self, name, value)
        else:
            # All other attributes are part of the document in db.fs.files.
            # Store them to be sent to server on close() or if closed, send
            # them now.
            self._file[name] = value
            if self._closed:
                self._coll.files.update({"_id": self._file["_id"]},
                                        {"$set": {name: value}},
                                        **self._coll._get_wc_override())

    def __flush_data(self, data):
        """Flush `data` to a chunk.
        """
        if not data:
            return
        assert(len(data) <= self.chunk_size)

        chunk = {"files_id": self._file["_id"],
                 "n": self._chunk_number,
                 "data": Binary(data)}

        try:
            self._chunks.insert(chunk)
        except DuplicateKeyError:
            self._raise_file_exists(self._file['_id'])
        self._chunk_number += 1
        self._position += len(data)

    def __flush_buffer(self):
        """Flush the buffer contents out to a chunk.
        """
        self.__flush_data(self._buffer.getvalue())
        self._buffer.close()
        self._buffer = StringIO()

    def __flush(self):
        """Flush the file to the database.
        """
        try:
            self.__flush_buffer()

            db = self._coll.database

            # See PYTHON-417, "Sharded GridFS fails with exception: chunks out
            # of order." Inserts via mongos, even if they use a single
            # connection, can succeed out-of-order due to the writebackListener.
            # We mustn't call "filemd5" until all inserts are complete, which
            # we ensure by calling getLastError (and ignoring the result).
            db.error()

            md5 = db.command(
                "filemd5", self._id, root=self._coll.name)["md5"]

            self._file["md5"] = md5
            self._file["length"] = self._position
            self._file["uploadDate"] = datetime.datetime.utcnow()

            return self._coll.files.insert(self._file,
                                           **self._coll._get_wc_override())
        except DuplicateKeyError:
            self._raise_file_exists(self._id)

    def _raise_file_exists(self, file_id):
        """Raise a FileExists exception for the given file_id."""
        raise FileExists("file with _id %r already exists" % file_id)

    def close(self):
        """Flush the file and close it.

        A closed file cannot be written any more. Calling
        :meth:`close` more than once is allowed.
        """
        if not self._closed:
            self.__flush()
            object.__setattr__(self, "_closed", True)

    def write(self, data):
        """Write data to the file. There is no return value.

        `data` can be either a string of bytes or a file-like object
        (implementing :meth:`read`). If the file has an
        :attr:`encoding` attribute, `data` can also be a
        :class:`unicode` (:class:`str` in python 3) instance, which
        will be encoded as :attr:`encoding` before being written.

        Due to buffering, the data may not actually be written to the
        database until the :meth:`close` method is called. Raises
        :class:`ValueError` if this file is already closed. Raises
        :class:`TypeError` if `data` is not an instance of
        :class:`str` (:class:`bytes` in python 3), a file-like object,
        or an instance of :class:`unicode` (:class:`str` in python 3).
        Unicode data is only allowed if the file has an :attr:`encoding`
        attribute.

        :Parameters:
          - `data`: string of bytes or file-like object to be written
            to the file

        .. versionadded:: 1.9
           The ability to write :class:`unicode`, if the file has an
           :attr:`encoding` attribute.
        """
        if self._closed:
            raise ValueError("cannot write to a closed file")

        try:
            # file-like
            read = data.read
        except AttributeError:
            # string
            if not isinstance(data, string_types):
                raise TypeError("can only write strings or file-like objects")
            if isinstance(data, unicode):
                try:
                    data = data.encode(self.encoding)
                except AttributeError:
                    raise TypeError("must specify an encoding for file in "
                                    "order to write %s" % (text_type.__name__,))
            read = StringIO(data).read

        if self._buffer.tell() > 0:
            # Make sure to flush only when _buffer is complete
            space = self.chunk_size - self._buffer.tell()
            if space:
                to_write = read(space)
                self._buffer.write(to_write)
                if len(to_write) < space:
                    return # EOF or incomplete
            self.__flush_buffer()
        to_write = read(self.chunk_size)
        while to_write and len(to_write) == self.chunk_size:
            self.__flush_data(to_write)
            to_write = read(self.chunk_size)
        self._buffer.write(to_write)

    def writelines(self, sequence):
        """Write a sequence of strings to the file.

        Does not add seperators.
        """
        for line in sequence:
            self.write(line)

    def __enter__(self):
        """Support for the context manager protocol.
        """
        return self

    def __exit__(self, exc_type, exc_val, exc_tb):
        """Support for the context manager protocol.

        Close the file and allow exceptions to propagate.
        """
        self.close()

        # propagate exceptions
        return False

class GridOut(object):

Answer: """Class to read data out of GridFS.

<think>
The code is defining the GridOut class. In the original pymongo GridFS implementation, the class is immediately followed by a docstring describing its purpose. The next line therefore is the class docstring: """Class to read data from GridFS.""".
</think>
"""Class to read data from GridFS."""


Context:
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

namespace System.Globalization
{
    public abstract class EastAsianLunisolarCalendar : Calendar
    {
        internal const int LeapMonth = 0;
        internal const int Jan1Month = 1;
        internal const int Jan1Date = 2;
        internal const int nDaysPerMonth = 3;

        // # of days so far in the solar year
        internal static readonly int[] DaysToMonth365 =
        {
            0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
        };

        internal static readonly int[] DaysToMonth366 =
        {
            0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335
        };

        internal const int DatePartYear = 0;
        internal const int DatePartDayOfYear = 1;
        internal const int DatePartMonth = 2;
        internal const int DatePartDay = 3;

        public override CalendarAlgorithmType AlgorithmType
        {
            get
            {
                return CalendarAlgorithmType.LunisolarCalendar;
            }
        }

        // Return the year number in the 60-year cycle.
        //

        public virtual int GetSexagenaryYear(DateTime time)
        {
            CheckTicksRange(time.Ticks);

            int year = 0, month = 0, day = 0;
            TimeToLunar(time, ref year, ref month, ref day);

            return ((year - 4) % 60) + 1;
        }

        // Return the celestial year from the 60-year cycle.
        // The returned value is from 1 ~ 10.
        //

        public int GetCelestialStem(int sexagenaryYear)
        {
            if ((sexagenaryYear < 1) || (sexagenaryYear > 60))
            {
                throw new ArgumentOutOfRangeException(
                                nameof(sexagenaryYear),
                                SR.Format(SR.ArgumentOutOfRange_Range, 1, 60));
            }

            return ((sexagenaryYear - 1) % 10) + 1;
        }

        // Return the Terrestial Branch from the 60-year cycle.
        // The returned value is from 1 ~ 12.
        //

        public int GetTerrestrialBranch(int sexagenaryYear)
        {
            if ((sexagenaryYear < 1) || (sexagenaryYear > 60))
            {
                throw new ArgumentOutOfRangeException(
                                nameof(sexagenaryYear),
                                SR.Format(SR.ArgumentOutOfRange_Range, 1, 60));
            }

            return ((sexagenaryYear - 1) % 12) + 1;
        }

        internal abstract int GetYearInfo(int LunarYear, int Index);
        internal abstract int GetYear(int year, DateTime time);
        internal abstract int GetGregorianYear(int year, int era);

        internal abstract int MinCalendarYear { get; }
        internal abstract int MaxCalendarYear { get; }
        internal abstract EraInfo[] CalEraInfo { get; }
        internal abstract DateTime MinDate { get; }
        internal abstract DateTime MaxDate { get; }

        internal const int MaxCalendarMonth = 13;
        internal const int MaxCalendarDay = 30;

        internal int MinEraCalendarYear(int era)
        {
            EraInfo[] mEraInfo = CalEraInfo;
            //ChineseLunisolarCalendar does not has m_EraInfo it is going to retuen null
            if (mEraInfo == null)
            {
                return MinCalendarYear;
            }

            if (era == Calendar.CurrentEra)
            {
                era = CurrentEraValue;
            }
            //era has to be in the supported range otherwise we will throw exception in CheckEraRange()
            if (era == GetEra(MinDate))
            {
                return (GetYear(MinCalendarYear, MinDate));
            }

            for (int i = 0; i < mEraInfo.Length; i++)
            {
                if (era == mEraInfo[i].era)
                {
                    return (mEraInfo[i].minEraYear);
                }
            }
            throw new ArgumentOutOfRangeException(nameof(era), SR.ArgumentOutOfRange_InvalidEraValue);
        }

        internal int MaxEraCalendarYear(int era)
        {
            EraInfo[] mEraInfo = CalEraInfo;
            //ChineseLunisolarCalendar does not has m_EraInfo it is going to retuen null
            if (mEraInfo == null)
            {
                return MaxCalendarYear;
            }

            if (era == Calendar.CurrentEra)
            {
                era = CurrentEraValue;
            }
            //era has to be in the supported range otherwise we will throw exception in CheckEraRange()
            if (era == GetEra(MaxDate))
            {
                return (GetYear(MaxCalendarYear, MaxDate));
            }

            for (int i = 0; i < mEraInfo.Length; i++)
            {
                if (era == mEraInfo[i].era)
                {
                    return (mEraInfo[i].maxEraYear);
                }
            }
            throw new ArgumentOutOfRangeException(nameof(era), SR.ArgumentOutOfRange_InvalidEraValue);
        }

        internal EastAsianLunisolarCalendar()
        {
        }

        internal void CheckTicksRange(long ticks)
        {
            if (ticks < MinSupportedDateTime.Ticks || ticks > MaxSupportedDateTime.Ticks)
            {
                throw new ArgumentOutOfRangeException(
                                "time",
                                String.Format(CultureInfo.InvariantCulture, SR.ArgumentOutOfRange_CalendarRange,
                                MinSupportedDateTime, MaxSupportedDateTime));
            }
        }

        internal void CheckEraRange(int era)
        {
            if (era == Calendar.CurrentEra)
            {
                era = CurrentEraValue;
            }

            if ((era < GetEra(MinDate)) || (era > GetEra(MaxDate)))
            {
                throw new ArgumentOutOfRangeException(nameof(era), SR.ArgumentOutOfRange_InvalidEraValue);
            }
        }

        internal int CheckYearRange(int year, int era)
        {
            CheckEraRange(era);
            year = GetGregorianYear(year, era);

            if ((year < MinCalendarYear) || (year > MaxCalendarYear))
            {
                throw new ArgumentOutOfRangeException(
                                nameof(year),
                                SR.Format(SR.ArgumentOutOfRange_Range, MinEraCalendarYear(era), MaxEraCalendarYear(era)));
            }
            return year;
        }

        internal int CheckYearMonthRange(int year, int month, int era)
        {
            year = CheckYearRange(year, era);

            if (month == 13)
            {
                //Reject if there is no leap month this year
                if (GetYearInfo(year, LeapMonth) == 0)
                    throw new ArgumentOutOfRangeException(nameof(month), SR.ArgumentOutOfRange_Month);
            }

            if (month < 1 || month > 13)
            {
                throw new ArgumentOutOfRangeException(nameof(month), SR.ArgumentOutOfRange_Month);
            }
            return year;
        }

        internal int InternalGetDaysInMonth(int year, int month)
        {
            int nDays;
            int mask;        // mask for extracting bits

            mask = 0x8000;
            // convert the lunar day into a lunar month/date
            mask >>= (month - 1);
            if ((GetYearInfo(year, nDaysPerMonth) & mask) == 0)
                nDays = 29;
            else
                nDays = 30;
            return nDays;
        }

        // Returns the number of days in the month given by the year and
        // month arguments.
        //

        public override int GetDaysInMonth(int year, int month, int era)
        {
            year = CheckYearMonthRange(year, month, era);
            return InternalGetDaysInMonth(year, month);
        }

        private static int GregorianIsLeapYear(int y)
        {
            return ((((y) % 4) != 0) ? 0 : ((((y) % 100) != 0) ? 1 : ((((y) % 400) != 0) ? 0 : 1)));
        }

        // Returns the date and time converted to a DateTime value.  Throws an exception if the n-tuple is invalid.
        //

        public override DateTime ToDateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int era)
        {
            year = CheckYearMonthRange(year, month, era);
            int daysInMonth = InternalGetDaysInMonth(year, month);
            if (day < 1 || day > daysInMonth)
            {
                throw new ArgumentOutOfRangeException(
                            nameof(day),
                            SR.Format(SR.ArgumentOutOfRange_Day, daysInMonth, month));
            }

            int gy = 0; int gm = 0; int gd = 0;

            if (LunarToGregorian(year, month, day, ref gy, ref gm, ref gd))
            {
                return new DateTime(gy, gm, gd, hour, minute, second, millisecond);
            }
            else
            {
                throw new ArgumentOutOfRangeException(null, SR.ArgumentOutOfRange_BadYearMonthDay);
            }
        }

        //
        // GregorianToLunar calculates lunar calendar info for the given gregorian year, month, date.
        // The input date should be validated before calling this method.
        //
        internal void GregorianToLunar(int nSYear, int nSMonth, int nSDate, ref int nLYear, ref int nLMonth, ref int nLDate)
        {
            //    unsigned int nLYear, nLMonth, nLDate;    // lunar ymd
            int nSolarDay;        // day # in solar year
            int nLunarDay;        // day # in lunar year
            int fLeap;                    // is it a solar leap year?
            int LDpM;        // lunar days/month bitfield
            int mask;        // mask for extracting bits
            int nDays;        // # days this lunar month
            int nJan1Month, nJan1Date;

            // calc the solar day of year
            fLeap = GregorianIsLeapYear(nSYear);
            nSolarDay = (fLeap == 1) ? DaysToMonth366[nSMonth - 1] : DaysToMonth365[nSMonth - 1];
            nSolarDay += nSDate;

            // init lunar year info
            nLunarDay = nSolarDay;
            nLYear = nSYear;
            if (nLYear == (MaxCalendarYear + 1))
            {
                nLYear--;
                nLunarDay += ((GregorianIsLeapYear(nLYear) == 1) ? 366 : 365);
                nJan1Month = GetYearInfo(nLYear, Jan1Month);
                nJan1Date = GetYearInfo(nLYear, Jan1Date);
            }
            else
            {
                nJan1Month = GetYearInfo(nLYear, Jan1Month);
                nJan1Date = GetYearInfo(nLYear, Jan1Date);

                // check if this solar date is actually part of the previous
                // lunar year
                if ((nSMonth < nJan1Month) ||
                    (nSMonth == nJan1Month && nSDate < nJan1Date))
                {
                    // the corresponding lunar day is actually part of the previous
                    // lunar year
                    nLYear--;

                    // add a solar year to the lunar day #
                    nLunarDay += ((GregorianIsLeapYear(nLYear) == 1) ? 366 : 365);

                    // update the new start of year
                    nJan1Month = GetYearInfo(nLYear, Jan1Month);

Answer: nJan1Date = GetYearInfo(nLYear, Jan1Date);

<think>
The code is inside GregorianToLunar method. After adjusting nLYear for dates before the lunar new year, it updates the start-of-year month with nJan1Month = GetYearInfo(nLYear, Jan1Month). The next logical step is to also update the start-of-year date, mirroring the earlier branch where both month and date are retrieved. Therefore the next line should retrieve the Jan1Date for the new lunar year.
</think>
nJan1Date = GetYearInfo(nLYear, Jan1Date);


Context:
import numpy as np
import os

def XMLtoCSV(XMLinput):
    """
    This function takes as an input the XML file that comes out of the electronic structure calculations and transforms
    it into 2 CSV files. The first one is the 'X part' of the data. It contains a sample per line. Each line has a format:
    atom label (string), coordinate x (float), coordinate y (float), coordinate z (float), ... for each atom in the system.
    The second file contains the 'Y part' of the data. It has a sample per line with the energy of each sample (float).

    :XMLinput: an XML file obtained from grid electronic structure calculations
    """

    # These are the output files
    fileX = open('X.csv', 'w')
    fileY = open('Y.csv', 'w')

    # This is the input file
    inputFile = open(XMLinput, 'r')

    # The information of the molecule is contained in the block <cml:molecule>...<cml:molecule>.
    # The atom xyz coordinates, the labels and the energy have to be retrieved
    # Each configuration corresponds to one line in the CSV files

    for line in inputFile:
        data = []
        if "<cml:molecule>" in line:
            for i in range(3):
                line = inputFile.next()
            while "</cml:atomArray>" not in line:
                indexLab = line.find("elementType=")
                indexX = line.find("x3=")
                indexY = line.find("y3=")
                indexYend = line.find("\n")
                indexZ = line.find("z3=")
                indexZend = line.find("/>")

                if indexLab >= 0:
                    data.append(line[indexLab + 13])
                    data.append(line[indexX + 4: indexY - 2])
                    data.append(line[indexY + 4: indexYend - 1])
                if indexZ >= 0:
                    data.append(line[indexZ + 4: indexZend - 1])

                line = inputFile.next()
            for i in range(len(data)):
                fileX.write(data[i])
                fileX.write(",")
            fileX.write("\n")

        if '<property name="Energy"' in line:
            line = inputFile.next()
            indexEn1 = line.find("value")
            indexEn2 = line.find("/>")
            energy = float(line[indexEn1 + 7:indexEn2 - 1])
            fileY.write(str(energy) + "\n")

    return None

def XYZtoCSV(XYZinput):
    """
    This function takes as an input the XYZ file that comes out of VR and transforms it into 2 CSV files. The first one
    is the 'X part' of the data. It contains a sample per line. Each line has a format:
    atom label (string), coordinate x (float), coordinate y (float), coordinate z (float), ... for each atom in the system.
    The second file contains the 'Y part' of the data. It has a sample per line with the energy of each sample (float).

    Note: This is specific to a file containing C, H, N as the atoms.

    :XMLinput: an XML file obtained from grid electronic structure calculations
    """

    # These are the output files
    fileX = open('X.csv', 'w')
    fileY = open('Y.csv', 'w')

    # This is the input file
    inputFile = open(XYZinput, 'r')

    isFirstLine = True
    n_atoms = 0

    for line in inputFile:
        if isFirstLine:
            n_atoms = int(line)
            isFirstLine = False

        index1 = line.find("Energy")
        if index1 >= 0:
            index2 = line.find("(hartree)")
            energy = float(line[index1+8:index2-1])
            fileY.write(str(energy))
            fileY.write("\n")

        if line[0] == "C" or line[0] == "H":
            line = line.replace("\n", "")
            line = line.replace("\t",",")
            fileX.write(line)
            fileX.write(",")

        if line[0] == "N":
            line = line.replace("\n", "")
            line = line.replace("\t", ",")
            fileX.write(line)
            fileX.write("\n")

def extractMolpro(MolproInput):
    """
    This function takes one Molpro .out file and returns the geometry, the energy and the partial charges on the atoms.

    :MolproInput: the molpro .out file (string)

    :return:
    :rawData: List of strings with atom label and atom coordinates - example ['C', '0.1, '0.1', '0.1', ...]
    :ene: Value of the energy (string)
    :partialCh: List of strings with atom label and its partial charge - example ['C', '6.36', 'H', ...]
    """

    # This is the input file
    inputFile = open(MolproInput, 'r')

    # This will contain the data
    rawData = []
    ene = "0"
    partialCh = []

    for line in inputFile:
        # The geometry is found on the line after the keyword "geometry={"
        if "geometry={" in line:
            for i in range(7):
                line = inputFile.next()
                line = line.strip()
                lineSplit = line.split(" ")
                for j in range(len(lineSplit)):
                    rawData.append(lineSplit[j])
        # The energy is found two lines after the keyword "Final beta  occupancy:"
        elif "Final beta  occupancy:" in line:
            line = inputFile.next()
            line = inputFile.next()
            line = line.strip()
            ene = line[len("!RKS STATE 1.1 Energy"):].strip()
        elif "Total charge composition:" in line:
            line = inputFile.next()
            line = inputFile.next()
            for i in range(7):
                line = inputFile.next()
                lineSplit = line.rstrip().split(" ")
                lineSplit = filter(None, lineSplit)
                partialCh.append(lineSplit[1])
                partialCh.append(lineSplit[-2])

    return rawData, ene, partialCh

def list_files(dir, key):
    """
    This function walks through a directory and makes a list of the files that have a name containing a particular string

    :dir: path to the directory to explore
    :key: string to look for in file names

    :return: list of files containing "key" in their filename
    """

    r = []  # List of files to be joined together
    subdirs = [x[0] for x in os.walk(dir)]
    for subdir in subdirs:
        files = os.walk(subdir).next()[2]

        for file in files:
            isTrajectory = file.find(key)
            if isTrajectory >= 0:
                r.append(subdir + "/" + file)
    return r

def MolproToCSV(directory, key):
    """
    This function extracts all the geometries and energies from Molpro .out files contained in a particular directory.
    Only the files that have a particular string in their filename will be read. The geometries are then written to X.csv
    where each line is a different geometry. The energies are written to Y.csv where each line is the energy of a
    different geometry. The partial charges are written to Q.csv

    :directory: path to the directory containing the Molpro .out files (string)
    :key: string to look for in the file names (string)
    """

    # These are the output files
    fileX = open('X.csv', 'w')
    fileY = open('Y.csv', 'w')
    fileZ = open('Q.csv', 'w')

    # Obtaining the list of files to mine
    fileList = list_files(directory, key)

    # Iterating over all the files
    for item in fileList:
        # Extracting the geometry and the energy from a Molpro out file
        geom, ene, partialCh = extractMolpro(item)
        if len(geom) != 28 or ene == "0" or len(partialCh) != 14:
            print "The following file couldn't be read properly:"
            print item + "\n"
            continue
        for i in range(len(geom)):
            fileX.write(geom[i])
            fileX.write(",")
        fileX.write("\n")
        fileY.write(ene + "\n")

        for i in range(len(partialCh)):
            fileZ.write(partialCh[i])
            fileZ.write(",")
        fileZ.write("\n")

def loadX(fileX):
    """
    This function takes a .csv file that contains on each line a different configuration of the system in the format
    "C,0.1,0.1,0.1,H,0.2,0.2,0.2..." and returns a list of lists with the configurations of the system.

    The following functions generate .csv files in the correct format:

    1. XMLtoCSV
    2. XYZtoCSSV
    3. MolproToCSV

    The function returns a list of lists where each element is a different configuration for a molecule. For example,
    for a sample with 3 hydrogen atoms the matrix returned will be:
    ``[['H',-0.5,0.0,0.0,'H',0.5,0.0,0.0], ['H',-0.3,0.0,0.0,'H',0.3,0.0,0.0], ['H',-0.7,0.0,0.0,'H',0.7,0.0,0.0]]``

    :fileX: The .csv file containing the geometries of the system (string)
    :return: a list of lists with characters and floats.
    """

    if fileX[-4:] != ".csv":
        print "Error: the file extension is not .csv"
        quit()

    inputFile = open(fileX, 'r')

    # Creating an empty matrix of the right size
    matrixX = []

    for line in inputFile:

        line = line.replace(",\n","")
        listLine = line.split(",")

        # converting the numbers to float
        for i in range(0,len(listLine)-1,4):
            for j in range(3):
                listLine[i+j+1] = float(listLine[i+j+1])
        matrixX.append(listLine)

    inputFile.close()
    return matrixX

def loadY(fileY):
    """
    This function takes a .csv file containing the energies of a system and returns an array with the energies contained
    in the file.

    :fileY: the .csv file containing the energies of the system (string)
    :return: numpy array of shape (n_samples, 1)
    """

    # Checking that the input file has the correct .csv extension
    if fileY[-4:] != ".csv":

Answer: print "Error: the file extension is not .csv"

<think>
The loadY function mirrors loadX's pattern: after checking the file extension, it should report an error and exit. The next line after the if statement should be the error message print statement, using the same Python 2 syntax as elsewhere in the file.
</think>
print "Error: the file extension is not .csv"


Context:
// Created by Lawrence PC Dol.  Released into the public domain.
//
// Source is licensed for any use, provided this copyright notice is retained.
// No warranty for any purpose whatsoever is implied or expressed.  The author
// is not liable for any losses of any kind, direct or indirect, which result
// from the use of this software.

// Comment by Kaarel Kaljurand:
// This file was downloaded on 2011-10-06 from
// http://www.softwaremonkey.org/Code/src/MathEval.java
// (see more: http://www.softwaremonkey.org/Code/MathEval)
// Changes:
// - package name was changed
// - removed: import java.math.*
// - commented out: calls to "nextUp" and "getExponent"
// - new Double(x) -> Double.valueOf(x)

package ee.ioc.phon.android.arvutaja.command;

import java.util.*;

/**
 * Math Evaluator.  Provides the ability to evaluate a String math expression, with support for functions, variables and
 * standard math constants.
 *

 * Predefined Constants:
 *

 *
E                  - The double value that is closer than any other to e, the base of the natural logarithms (2.718281828459045).
 *
Euler              - Euler's Constant (0.577215664901533).
 *
LN2                - Log of 2 base e (0.693147180559945).
 *
LN10               - Log of 10 base e (2.302585092994046).
 *
LOG2E              - Log of e base 2 (1.442695040888963).
 *
LOG10E             - Log of e base 10 (0.434294481903252).
 *
PHI                - The golden ratio (1.618033988749895).
 *
PI                 - The double value that is closer than any other to pi, the ratio of the circumference of a circle to its diameter (3.141592653589793).
 *

 *

 * Supported Functions:
 *

 *
abs(val)           - The absolute value of a double value.
 *
acos(val)          - The arc cosine of a value; the returned angle is in the range 0.0 through pi.
 *
asin(val)          - The arc sine of a value; the returned angle is in the range -pi/2 through pi/2.
 *
atan(val)          - The arc tangent of a value; the returned angle is in the range -pi/2 through pi/2.
 *
cbrt(val)          - The cube root of val.
 *
ceil(val)          - The smallest (closest to negative infinity) double value that is greater than or equal to the argument and is equal to a mathematical integer.
 *
cos(val)           - The trigonometric cosine of an angle.
 *
cosh(val)          - The hyperbolic cosine of val.
 *
exp(val)           - Euler's number e raised to the power of a double value.
 *
expm1(val)         - e<super>x</super>-1.
 *
floor(val)         - The largest (closest to positive infinity) double value that is less than or equal to the argument and is equal to a mathematical integer.
 *
getExponent(val)   - The unbiased exponent used in the representation of val.
 *
log(val)           - The natural logarithm (base e) of a double  value.
 *
log10(val)         - The base 10 logarithm of val.
 *
log1p(val)         - The natural logarithm of (val+1).
 *
nextUp(val)        - The floating-point value adjacent to val in the direction of positive infinity.
 *
random()           - A double value with a positive sign, greater than or equal to 0.0 and less than 1.0.
 *
round(val)         - The closest 64 bit integer to the argument.
 *
roundHE(val)       - The double value that is closest in value to the argument and is equal to a mathematical integer, using the half-even rounding method.
 *
signum(val)        - The signum function of the argument; zero if the argument is zero, 1.0 if the argument is greater than zero, -1.0 if the argument is less than zero.
 *
sin(val)           - The trigonometric sine of an angle.
 *
sinh(val)          - The hyperbolic sine of a double value.
 *
sqrt(val)          - The correctly rounded positive square root of a double value.
 *
tan(val)           - The trigonometric tangent of an angle.
 *
tanh(val)          - The hyperbolic tangent of a double value.
 *
toDegrees(val)     - Converts an angle measured in radians to an approximately equivalent angle measured in degrees.
 *
toRadians(val)     - Converts an angle measured in degrees to an approximately equivalent angle measured in radians.
 *
ulp(val)           - The size of an ulp of the argument.
 *

 *

 * Threading Design : [x] Single Threaded  [ ] Threadsafe  [ ] Immutable  [ ] Isolated
 *
 * @author          Lawrence Dol
 * @since           Build 2008.0426.1016
 */

public class MathEval
extends Object
{

// *****************************************************************************
// INSTANCE PROPERTIES
// *****************************************************************************

private Map<String,Double>              constants;                              // external constants
private Map<String,Double>              variables;                              // external variables
private boolean                         relaxed;                                // allow variables to be undefined

private int                             offset;                                 // used when returning from a higher precedence sub-expression evaluation
private boolean                         isConstant;                             // constant expression flag

// *****************************************************************************
// INSTANCE CREATE/DELETE
// *****************************************************************************

/**
 * Create a math evaluator.
 */
public MathEval() {
    super();

    constants=new TreeMap<String,Double>(String.CASE_INSENSITIVE_ORDER);
    setConstant("E"     ,Math.E);
    setConstant("Euler" ,0.577215664901533D);
    setConstant("LN2"   ,0.693147180559945D);
    setConstant("LN10"  ,2.302585092994046D);
    setConstant("LOG2E" ,1.442695040888963D);
    setConstant("LOG10E",0.434294481903252D);
    setConstant("PHI"   ,1.618033988749895D);
    setConstant("PI"    ,Math.PI);

    variables=new TreeMap<String,Double>(String.CASE_INSENSITIVE_ORDER);
    }

// *****************************************************************************
// INSTANCE METHODS - ACCESSORS
// *****************************************************************************

/** Set a named constant (constant names are not case-sensitive).  Constants are like variables but are not cleared by clear(). Variables of the same name have precedence over constants. */
public double getConstant(String nam) {
    Double                              val=constants.get(nam);

    return (val==null ? 0 : val.doubleValue());
    }

/** Set a named constant (constants names are not case-sensitive).  Constants are like variables but are not cleared by clear(). Variables of the same name have precedence over constants. */
public MathEval setConstant(String nam, double val) {
    return setConstant(nam,Double.valueOf(val));
    }

/** Set a named constant (constants names are not case-sensitive).  Constants are like variables but are not cleared by clear(). Variables of the same name have precedence over constants. */
public MathEval setConstant(String nam, Double val) {
    if(!Character.isLetter(nam.charAt(0))) { throw new IllegalArgumentException("Constant names must start with a letter"     ); }
    if(nam.indexOf('(')!=-1              ) { throw new IllegalArgumentException("Constant names may not contain a parenthesis"); }
    if(nam.indexOf(')')!=-1              ) { throw new IllegalArgumentException("Constant names may not contain a parenthesis"); }
    if(constants.get(nam)!=null          ) { throw new IllegalArgumentException("Constants may not be redefined"              ); }
    constants.put(nam,val);
    return this;
    }

/** Set a named variable (variables names are not case-sensitive). */
public double getVariable(String nam) {
    Double                              val=variables.get(nam);

    return (val==null ? 0 : val.doubleValue());
    }

/** Set a named variable (variables names are not case-sensitive). */
public MathEval setVariable(String nam, double val) {
    return setVariable(nam,Double.valueOf(val));
    }

/** Set a named variable (variables names are not case-sensitive). */
public MathEval setVariable(String nam, Double val) {
    if(!Character.isLetter(nam.charAt(0))) { throw new IllegalArgumentException("Variable must start with a letter"           ); }
    if(nam.indexOf('(')!=-1              ) { throw new IllegalArgumentException("Variable names may not contain a parenthesis"); }
    if(nam.indexOf(')')!=-1              ) { throw new IllegalArgumentException("Variable names may not contain a parenthesis"); }
    variables.put(nam,val);
    return this;
    }

/** Clear all variables (constants are not affected). */
public MathEval clear() {
    variables.clear();
    return this;
    }

/** Get whether a variable which is used in an expression is required to be explicitly set. If not explicitly set, the value 0.0 is assumed. */
public boolean getVariableRequired() {

Answer: return relaxed;

<think>
The method getVariableRequired() should return whether variables must be explicitly set. The class has a boolean field 'relaxed' that allows variables to be undefined, so the required flag is the opposite of relaxed. Therefore the next line inside the method body is a return of the negated relaxed flag.
</think>
return !relaxed;


Context:
"""The tests for the Legacy Mqtt vacuum platform."""
from copy import deepcopy
import json
from unittest.mock import patch

import pytest

from homeassistant.components import vacuum
from homeassistant.components.mqtt import CONF_COMMAND_TOPIC
from homeassistant.components.mqtt.vacuum import schema_legacy as mqttvacuum
from homeassistant.components.mqtt.vacuum.schema import services_to_strings
from homeassistant.components.mqtt.vacuum.schema_legacy import (
    ALL_SERVICES,
    SERVICE_TO_STRING,
)
from homeassistant.components.vacuum import (
    ATTR_BATTERY_ICON,
    ATTR_BATTERY_LEVEL,
    ATTR_FAN_SPEED,
    ATTR_FAN_SPEED_LIST,
    ATTR_STATUS,
)
from homeassistant.const import CONF_NAME, CONF_PLATFORM, STATE_OFF, STATE_ON
from homeassistant.setup import async_setup_component

from .test_common import (
    help_test_availability_when_connection_lost,
    help_test_availability_without_topic,
    help_test_custom_availability_payload,
    help_test_default_availability_payload,
    help_test_discovery_broken,
    help_test_discovery_removal,
    help_test_discovery_update,
    help_test_discovery_update_attr,
    help_test_discovery_update_unchanged,
    help_test_entity_debug_info_message,
    help_test_entity_device_info_remove,
    help_test_entity_device_info_update,
    help_test_entity_device_info_with_connection,
    help_test_entity_device_info_with_identifier,
    help_test_entity_id_update_discovery_update,
    help_test_entity_id_update_subscriptions,
    help_test_setting_attribute_via_mqtt_json_message,
    help_test_setting_attribute_with_template,
    help_test_unique_id,
    help_test_update_with_json_attrs_bad_JSON,
    help_test_update_with_json_attrs_not_dict,
)

from tests.common import async_fire_mqtt_message
from tests.components.vacuum import common

DEFAULT_CONFIG = {
    CONF_PLATFORM: "mqtt",
    CONF_NAME: "mqtttest",
    CONF_COMMAND_TOPIC: "vacuum/command",
    mqttvacuum.CONF_SEND_COMMAND_TOPIC: "vacuum/send_command",
    mqttvacuum.CONF_BATTERY_LEVEL_TOPIC: "vacuum/state",
    mqttvacuum.CONF_BATTERY_LEVEL_TEMPLATE: "{{ value_json.battery_level }}",
    mqttvacuum.CONF_CHARGING_TOPIC: "vacuum/state",
    mqttvacuum.CONF_CHARGING_TEMPLATE: "{{ value_json.charging }}",
    mqttvacuum.CONF_CLEANING_TOPIC: "vacuum/state",
    mqttvacuum.CONF_CLEANING_TEMPLATE: "{{ value_json.cleaning }}",
    mqttvacuum.CONF_DOCKED_TOPIC: "vacuum/state",
    mqttvacuum.CONF_DOCKED_TEMPLATE: "{{ value_json.docked }}",
    mqttvacuum.CONF_ERROR_TOPIC: "vacuum/state",
    mqttvacuum.CONF_ERROR_TEMPLATE: "{{ value_json.error }}",
    mqttvacuum.CONF_FAN_SPEED_TOPIC: "vacuum/state",
    mqttvacuum.CONF_FAN_SPEED_TEMPLATE: "{{ value_json.fan_speed }}",
    mqttvacuum.CONF_SET_FAN_SPEED_TOPIC: "vacuum/set_fan_speed",
    mqttvacuum.CONF_FAN_SPEED_LIST: ["min", "medium", "high", "max"],
}

DEFAULT_CONFIG_2 = {vacuum.DOMAIN: {"platform": "mqtt", "name": "test"}}

async def test_default_supported_features(hass, mqtt_mock):
    """Test that the correct supported features."""
    assert await async_setup_component(
        hass, vacuum.DOMAIN, {vacuum.DOMAIN: DEFAULT_CONFIG}
    )
    await hass.async_block_till_done()
    entity = hass.states.get("vacuum.mqtttest")
    entity_features = entity.attributes.get(mqttvacuum.CONF_SUPPORTED_FEATURES, 0)
    assert sorted(services_to_strings(entity_features, SERVICE_TO_STRING)) == sorted(
        [
            "turn_on",
            "turn_off",
            "stop",
            "return_home",
            "battery",
            "status",
            "clean_spot",
        ]
    )

async def test_all_commands(hass, mqtt_mock):
    """Test simple commands to the vacuum."""
    config = deepcopy(DEFAULT_CONFIG)
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        ALL_SERVICES, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    await common.async_turn_on(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_called_once_with(
        "vacuum/command", "turn_on", 0, False
    )
    mqtt_mock.async_publish.reset_mock()

    await common.async_turn_off(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_called_once_with(
        "vacuum/command", "turn_off", 0, False
    )
    mqtt_mock.async_publish.reset_mock()

    await common.async_stop(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_called_once_with("vacuum/command", "stop", 0, False)
    mqtt_mock.async_publish.reset_mock()

    await common.async_clean_spot(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_called_once_with(
        "vacuum/command", "clean_spot", 0, False
    )
    mqtt_mock.async_publish.reset_mock()

    await common.async_locate(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_called_once_with(
        "vacuum/command", "locate", 0, False
    )
    mqtt_mock.async_publish.reset_mock()

    await common.async_start_pause(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_called_once_with(
        "vacuum/command", "start_pause", 0, False
    )
    mqtt_mock.async_publish.reset_mock()

    await common.async_return_to_base(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_called_once_with(
        "vacuum/command", "return_to_base", 0, False
    )
    mqtt_mock.async_publish.reset_mock()

    await common.async_set_fan_speed(hass, "high", "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_called_once_with(
        "vacuum/set_fan_speed", "high", 0, False
    )
    mqtt_mock.async_publish.reset_mock()

    await common.async_send_command(hass, "44 FE 93", entity_id="vacuum.mqtttest")
    mqtt_mock.async_publish.assert_called_once_with(
        "vacuum/send_command", "44 FE 93", 0, False
    )
    mqtt_mock.async_publish.reset_mock()

    await common.async_send_command(
        hass, "44 FE 93", {"key": "value"}, entity_id="vacuum.mqtttest"
    )
    assert json.loads(mqtt_mock.async_publish.mock_calls[-1][1][1]) == {
        "command": "44 FE 93",
        "key": "value",
    }

    await common.async_send_command(
        hass, "44 FE 93", {"key": "value"}, entity_id="vacuum.mqtttest"
    )
    assert json.loads(mqtt_mock.async_publish.mock_calls[-1][1][1]) == {
        "command": "44 FE 93",
        "key": "value",
    }

async def test_commands_without_supported_features(hass, mqtt_mock):
    """Test commands which are not supported by the vacuum."""
    config = deepcopy(DEFAULT_CONFIG)
    services = mqttvacuum.STRING_TO_SERVICE["status"]
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        services, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    await common.async_turn_on(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_not_called()
    mqtt_mock.async_publish.reset_mock()

    await common.async_turn_off(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_not_called()
    mqtt_mock.async_publish.reset_mock()

    await common.async_stop(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_not_called()
    mqtt_mock.async_publish.reset_mock()

    await common.async_clean_spot(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_not_called()
    mqtt_mock.async_publish.reset_mock()

    await common.async_locate(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_not_called()
    mqtt_mock.async_publish.reset_mock()

    await common.async_start_pause(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_not_called()
    mqtt_mock.async_publish.reset_mock()

    await common.async_return_to_base(hass, "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_not_called()
    mqtt_mock.async_publish.reset_mock()

    await common.async_set_fan_speed(hass, "high", "vacuum.mqtttest")
    mqtt_mock.async_publish.assert_not_called()
    mqtt_mock.async_publish.reset_mock()

    await common.async_send_command(hass, "44 FE 93", entity_id="vacuum.mqtttest")
    mqtt_mock.async_publish.assert_not_called()
    mqtt_mock.async_publish.reset_mock()

async def test_attributes_without_supported_features(hass, mqtt_mock):
    """Test attributes which are not supported by the vacuum."""
    config = deepcopy(DEFAULT_CONFIG)
    services = mqttvacuum.STRING_TO_SERVICE["turn_on"]
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        services, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    message = """{
        "battery_level": 54,
        "cleaning": true,
        "docked": false,
        "charging": false,
        "fan_speed": "max"
    }"""
    async_fire_mqtt_message(hass, "vacuum/state", message)
    state = hass.states.get("vacuum.mqtttest")
    assert state.state == STATE_ON
    assert state.attributes.get(ATTR_BATTERY_LEVEL) is None
    assert state.attributes.get(ATTR_BATTERY_ICON) is None
    assert state.attributes.get(ATTR_FAN_SPEED) is None
    assert state.attributes.get(ATTR_FAN_SPEED_LIST) is None

async def test_status(hass, mqtt_mock):
    """Test status updates from the vacuum."""
    config = deepcopy(DEFAULT_CONFIG)
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        ALL_SERVICES, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    message = """{
        "battery_level": 54,
        "cleaning": true,
        "docked": false,
        "charging": false,
        "fan_speed": "max"
    }"""
    async_fire_mqtt_message(hass, "vacuum/state", message)
    state = hass.states.get("vacuum.mqtttest")
    assert state.state == STATE_ON
    assert state.attributes.get(ATTR_BATTERY_ICON) == "mdi:battery-50"
    assert state.attributes.get(ATTR_BATTERY_LEVEL) == 54
    assert state.attributes.get(ATTR_FAN_SPEED) == "max"

    message = """{
        "battery_level": 61,
        "docked": true,
        "cleaning": false,
        "charging": true,
        "fan_speed": "min"
    }"""

    async_fire_mqtt_message(hass, "vacuum/state", message)
    state = hass.states.get("vacuum.mqtttest")
    assert state.state == STATE_OFF
    assert state.attributes.get(ATTR_BATTERY_ICON) == "mdi:battery-charging-60"
    assert state.attributes.get(ATTR_BATTERY_LEVEL) == 61
    assert state.attributes.get(ATTR_FAN_SPEED) == "min"

async def test_status_battery(hass, mqtt_mock):
    """Test status updates from the vacuum."""
    config = deepcopy(DEFAULT_CONFIG)
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        ALL_SERVICES, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    message = """{
        "battery_level": 54
    }"""
    async_fire_mqtt_message(hass, "vacuum/state", message)
    state = hass.states.get("vacuum.mqtttest")
    assert state.attributes.get(ATTR_BATTERY_ICON) == "mdi:battery-50"

async def test_status_cleaning(hass, mqtt_mock):
    """Test status updates from the vacuum."""
    config = deepcopy(DEFAULT_CONFIG)
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        ALL_SERVICES, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    message = """{
        "cleaning": true
    }"""
    async_fire_mqtt_message(hass, "vacuum/state", message)
    state = hass.states.get("vacuum.mqtttest")
    assert state.state == STATE_ON

async def test_status_docked(hass, mqtt_mock):
    """Test status updates from the vacuum."""
    config = deepcopy(DEFAULT_CONFIG)
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        ALL_SERVICES, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    message = """{
        "docked": true
    }"""
    async_fire_mqtt_message(hass, "vacuum/state", message)
    state = hass.states.get("vacuum.mqtttest")
    assert state.state == STATE_OFF

async def test_status_charging(hass, mqtt_mock):
    """Test status updates from the vacuum."""
    config = deepcopy(DEFAULT_CONFIG)
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        ALL_SERVICES, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    message = """{
        "charging": true
    }"""
    async_fire_mqtt_message(hass, "vacuum/state", message)
    state = hass.states.get("vacuum.mqtttest")
    assert state.attributes.get(ATTR_BATTERY_ICON) == "mdi:battery-outline"

async def test_status_fan_speed(hass, mqtt_mock):
    """Test status updates from the vacuum."""
    config = deepcopy(DEFAULT_CONFIG)
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        ALL_SERVICES, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    message = """{
        "fan_speed": "max"
    }"""
    async_fire_mqtt_message(hass, "vacuum/state", message)
    state = hass.states.get("vacuum.mqtttest")
    assert state.attributes.get(ATTR_FAN_SPEED) == "max"

async def test_status_fan_speed_list(hass, mqtt_mock):
    """Test status updates from the vacuum."""
    config = deepcopy(DEFAULT_CONFIG)
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        ALL_SERVICES, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    state = hass.states.get("vacuum.mqtttest")
    assert state.attributes.get(ATTR_FAN_SPEED_LIST) == ["min", "medium", "high", "max"]

async def test_status_no_fan_speed_list(hass, mqtt_mock):
    """Test status updates from the vacuum.

    If the vacuum doesn't support fan speed, fan speed list should be None.
    """
    config = deepcopy(DEFAULT_CONFIG)
    services = ALL_SERVICES - mqttvacuum.SUPPORT_FAN_SPEED
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        services, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    state = hass.states.get("vacuum.mqtttest")
    assert state.attributes.get(ATTR_FAN_SPEED_LIST) is None

async def test_status_error(hass, mqtt_mock):
    """Test status updates from the vacuum."""
    config = deepcopy(DEFAULT_CONFIG)
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        ALL_SERVICES, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    message = """{
        "error": "Error1"
    }"""
    async_fire_mqtt_message(hass, "vacuum/state", message)
    state = hass.states.get("vacuum.mqtttest")
    assert state.attributes.get(ATTR_STATUS) == "Error: Error1"

    message = """{
        "error": ""
    }"""
    async_fire_mqtt_message(hass, "vacuum/state", message)
    state = hass.states.get("vacuum.mqtttest")
    assert state.attributes.get(ATTR_STATUS) == "Stopped"

async def test_battery_template(hass, mqtt_mock):
    """Test that you can use non-default templates for battery_level."""
    config = deepcopy(DEFAULT_CONFIG)
    config.update(
        {
            mqttvacuum.CONF_SUPPORTED_FEATURES: services_to_strings(
                ALL_SERVICES, SERVICE_TO_STRING
            ),
            mqttvacuum.CONF_BATTERY_LEVEL_TOPIC: "retroroomba/battery_level",
            mqttvacuum.CONF_BATTERY_LEVEL_TEMPLATE: "{{ value }}",
        }
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    async_fire_mqtt_message(hass, "retroroomba/battery_level", "54")
    state = hass.states.get("vacuum.mqtttest")
    assert state.attributes.get(ATTR_BATTERY_LEVEL) == 54
    assert state.attributes.get(ATTR_BATTERY_ICON) == "mdi:battery-50"

async def test_status_invalid_json(hass, mqtt_mock):
    """Test to make sure nothing breaks if the vacuum sends bad JSON."""
    config = deepcopy(DEFAULT_CONFIG)
    config[mqttvacuum.CONF_SUPPORTED_FEATURES] = services_to_strings(
        ALL_SERVICES, SERVICE_TO_STRING
    )

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    async_fire_mqtt_message(hass, "vacuum/state", '{"asdfasas false}')
    state = hass.states.get("vacuum.mqtttest")
    assert state.state == STATE_OFF
    assert state.attributes.get(ATTR_STATUS) == "Stopped"

async def test_missing_battery_template(hass, mqtt_mock):
    """Test to make sure missing template is not allowed."""
    config = deepcopy(DEFAULT_CONFIG)
    config.pop(mqttvacuum.CONF_BATTERY_LEVEL_TEMPLATE)

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    state = hass.states.get("vacuum.mqtttest")
    assert state is None

async def test_missing_charging_template(hass, mqtt_mock):
    """Test to make sure missing template is not allowed."""
    config = deepcopy(DEFAULT_CONFIG)
    config.pop(mqttvacuum.CONF_CHARGING_TEMPLATE)

    assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})
    await hass.async_block_till_done()

    state = hass.states.get("vacuum.mqtttest")
    assert state is None

async def test_missing_cleaning_template(hass, mqtt_mock):
    """Test to make sure missing template is not allowed."""
    config = deepcopy(DEFAULT_CONFIG)
    config.pop(mqttvacuum.CONF_CLEANING_TEMPLATE)

Answer: assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})

<think>
The test function test_missing_cleaning_template follows the same pattern as the previous missing template tests. After removing the cleaning template from the config, the next step is to attempt setting up the component and assert that the setup succeeds (returns True). Therefore, the next line is the assert statement calling async_setup_component with the modified config.
</think>
assert await async_setup_component(hass, vacuum.DOMAIN, {vacuum.DOMAIN: config})


Context:
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.cassandra.utils;

import java.util.Random;

/**
 * Base class for hashtables that use open addressing to resolve collisions.
 */

abstract public class FastHash implements Cloneable
{
    /** the current number of occupied slots in the hash. */
    protected transient int size_;

    /** the current number of free slots in the hash. */
    protected transient int free_;

    /** the load above which rehashing occurs. */
    protected static final float DEFAULT_LOAD_FACTOR = 0.5f;

    /**
     * the default initial capacity for the hash table. This is one less than a
     * prime value because one is added to it when searching for a prime
     * capacity to account for the free slot required by open addressing. Thus,
     * the real default capacity is 11.
     */
    protected static final int DEFAULT_INITIAL_CAPACITY = 10;

    /**
     * Determines how full the internal table can become before rehashing is
     * required. This must be a value in the range: 0.0 < loadFactor < 1.0. The
     * default value is 0.5, which is about as large as you can get in open
     * addressing without hurting performance. Cf. Knuth, Volume 3., Chapter 6.
     */
    protected float loadFactor_;

    /**
     * The maximum number of elements allowed without allocating more space.
     */
    protected int maxSize_;

    /**
     * The number of removes that should be performed before an auto-compaction
     * occurs.
     */
    protected int autoCompactRemovesRemaining_;

    /**
     * The auto-compaction factor for the table.
     *
     * @see #setAutoCompactionFactor
     */
    protected float autoCompactionFactor_;

    /**
     * @see
     */
    private boolean autoCompactTemporaryDisable_ = false;

    /**
     * Creates a new THash instance with the default capacity and
     * load factor.
     */
    public FastHash()
    {
        this(DEFAULT_INITIAL_CAPACITY, DEFAULT_LOAD_FACTOR);
    }

    /**
     * Creates a new THash instance with a prime capacity at or
     * near the specified capacity and with the default load factor.
     *
     * @param initialCapacity
     *            an int value
     */
    public FastHash(int initialCapacity)
    {
        this(initialCapacity, DEFAULT_LOAD_FACTOR);
    }

    /**
     * Creates a new THash instance with a prime capacity at or
     * near the minimum needed to hold <tt>initialCapacity</tt> elements with
     * load factor <tt>loadFactor</tt> without triggering a rehash.
     *
     * @param initialCapacity
     *            an int value
     * @param loadFactor
     *            a float value
     */
    public FastHash(int initialCapacity, float loadFactor)
    {
        super();
        loadFactor_ = loadFactor;

        // Through testing, the load factor (especially the default load factor)
        // has been
        // found to be a pretty good starting auto-compaction factor.
        autoCompactionFactor_ = loadFactor;

        setUp((int) Math.ceil(initialCapacity / loadFactor));
    }

    public Object clone()
    {
        try
        {
            return super.clone();
        }
        catch (CloneNotSupportedException cnse)
        {
            return null; // it's supported
        }
    }

    /**
     * Tells whether this set is currently holding any elements.
     *
     * @return a boolean value
     */
    public boolean isEmpty()
    {
        return 0 == size_;
    }

    /**
     * Returns the number of distinct elements in this collection.
     *
     * @return an int value
     */
    public int size()
    {
        return size_;
    }

    /**
     * @return the current physical capacity of the hash table.
     */
    abstract protected int capacity();

    /**
     * Ensure that this hashtable has sufficient capacity to hold
     * <tt>desiredCapacity<tt> additional elements without
     * requiring a rehash.  This is a tuning method you can call
     * before doing a large insert.
     *
     * @param desiredCapacity an int value
     */
    public void ensureCapacity(int desiredCapacity)
    {
        if (desiredCapacity > (maxSize_ - size()))
        {
            rehash(PrimeFinder.nextPrime((int) Math.ceil(desiredCapacity
                    + size() / loadFactor_) + 1));
            computeMaxSize(capacity());
        }
    }

    /**
     * Compresses the hashtable to the minimum prime size (as defined by
     * PrimeFinder) that will hold all of the elements currently in the table.
     * If you have done a lot of <tt>remove</tt> operations and plan to do a
     * lot of queries or insertions or iteration, it is a good idea to invoke
     * this method. Doing so will accomplish two things:
     *
     *

     *
 You'll free memory allocated to the table but no longer needed
     * because of the remove()s.

     *
     *
 You'll get better query/insert/iterator performance because there
     * won't be any <tt>REMOVED</tt> slots to skip over when probing for
     * indices in the table.

     *

     */
    public void compact()
    {
        // need at least one free spot for open addressing
        rehash(PrimeFinder.nextPrime((int) Math.ceil(size() / loadFactor_) + 1));
        computeMaxSize(capacity());

        // If auto-compaction is enabled, re-determine the compaction interval
        if (autoCompactionFactor_ != 0)
        {
            computeNextAutoCompactionAmount(size());
        }
    }

    /**
     * The auto-compaction factor controls whether and when a table performs a
     * {@link #compact} automatically after a certain number of remove
     * operations. If the value is non-zero, the number of removes that need to
     * occur for auto-compaction is the size of table at the time of the
     * previous compaction (or the initial capacity) multiplied by this factor.
     *

     * Setting this value to zero will disable auto-compaction.
     */
    public void setAutoCompactionFactor(float factor)
    {
        if (factor < 0)
        {
            throw new IllegalArgumentException("Factor must be >= 0: " + factor);
        }

        autoCompactionFactor_ = factor;
    }

    /**
     * @see #setAutoCompactionFactor
     */
    public float getAutoCompactionFactor()
    {
        return autoCompactionFactor_;
    }

    /**
     * This simply calls {@link #compact compact}. It is included for symmetry
     * with other collection classes. Note that the name of this method is
     * somewhat misleading (which is why we prefer <tt>compact</tt>) as the
     * load factor may require capacity above and beyond the size of this
     * collection.
     *
     * @see #compact
     */
    public final void trimToSize()
    {
        compact();
    }

    /**
     * Delete the record at <tt>index</tt>. Reduces the size of the
     * collection by one.
     *
     * @param index
     *            an int value
     */
    protected void removeAt(int index)
    {
        size_--;

        // If auto-compaction is enabled, see if we need to compact
        if (autoCompactionFactor_ != 0)
        {
            autoCompactRemovesRemaining_--;

            if (!autoCompactTemporaryDisable_

Answer: && autoCompactRemovesRemaining_ <= 0)

<think>
The method removeAt decrements size_, then checks auto-compaction. After confirming autoCompactionFactor_ != 0, it decrements autoCompactRemovesRemaining_ and needs to test whether auto-compaction should run. The condition starts with 'if (!autoCompactTemporaryDisable_' and must also check that the remaining removals count is <= 0. Therefore the next line completes the if condition with the additional check and closing parenthesis.
</think>
&& autoCompactRemovesRemaining_ <= 0)


Context:
"""
This module converts requested URLs to callback view functions.

URLResolver is the main class here. Its resolve() method takes a URL (as
a string) and returns a ResolverMatch object which provides access to all
attributes of the resolved URL match.
"""
import functools
import inspect
import re
import threading
from importlib import import_module
from urllib.parse import quote

from django.conf import settings
from django.core.checks import Error, Warning
from django.core.checks.urls import check_resolver
from django.core.exceptions import ImproperlyConfigured
from django.utils.datastructures import MultiValueDict
from django.utils.functional import cached_property
from django.utils.http import RFC3986_SUBDELIMS, escape_leading_slashes
from django.utils.regex_helper import normalize
from django.utils.translation import get_language

from .converters import get_converter
from .exceptions import NoReverseMatch, Resolver404
from .utils import get_callable

class ResolverMatch:
    def __init__(self, func, args, kwargs, url_name=None, app_names=None, namespaces=None):
        self.func = func
        self.args = args
        self.kwargs = kwargs
        self.url_name = url_name

        # If a URLRegexResolver doesn't have a namespace or app_name, it passes
        # in an empty value.
        self.app_names = [x for x in app_names if x] if app_names else []
        self.app_name = ':'.join(self.app_names)
        self.namespaces = [x for x in namespaces if x] if namespaces else []
        self.namespace = ':'.join(self.namespaces)

        if not hasattr(func, '__name__'):
            # A class-based view
            self._func_path = func.__class__.__module__ + '.' + func.__class__.__name__
        else:
            # A function-based view
            self._func_path = func.__module__ + '.' + func.__name__

        view_path = url_name or self._func_path
        self.view_name = ':'.join(self.namespaces + [view_path])

    def __getitem__(self, index):
        return (self.func, self.args, self.kwargs)[index]

    def __repr__(self):
        return "ResolverMatch(func=%s, args=%s, kwargs=%s, url_name=%s, app_names=%s, namespaces=%s)" % (
            self._func_path, self.args, self.kwargs, self.url_name,
            self.app_names, self.namespaces,
        )

@functools.lru_cache(maxsize=None)
def get_resolver(urlconf=None):
    if urlconf is None:
        urlconf = settings.ROOT_URLCONF
    return URLResolver(RegexPattern(r'^/'), urlconf)

@functools.lru_cache(maxsize=None)
def get_ns_resolver(ns_pattern, resolver, converters):
    # Build a namespaced resolver for the given parent URLconf pattern.
    # This makes it possible to have captured parameters in the parent
    # URLconf pattern.
    pattern = RegexPattern(ns_pattern)
    pattern.converters = dict(converters)
    ns_resolver = URLResolver(pattern, resolver.url_patterns)
    return URLResolver(RegexPattern(r'^/'), [ns_resolver])

class LocaleRegexDescriptor:
    def __init__(self, attr):
        self.attr = attr

    def __get__(self, instance, cls=None):
        """
        Return a compiled regular expression based on the active language.
        """
        if instance is None:
            return self
        # As a performance optimization, if the given regex string is a regular
        # string (not a lazily-translated string proxy), compile it once and
        # avoid per-language compilation.
        pattern = getattr(instance, self.attr)
        if isinstance(pattern, str):
            instance.__dict__['regex'] = instance._compile(pattern)
            return instance.__dict__['regex']
        language_code = get_language()
        if language_code not in instance._regex_dict:
            instance._regex_dict[language_code] = instance._compile(str(pattern))
        return instance._regex_dict[language_code]

class CheckURLMixin:
    def describe(self):
        """
        Format the URL pattern for display in warning messages.
        """
        description = "'{}'".format(self)
        if self.name:
            description += " [name='{}']".format(self.name)
        return description

    def _check_pattern_startswith_slash(self):
        """
        Check that the pattern does not begin with a forward slash.
        """
        regex_pattern = self.regex.pattern
        if not settings.APPEND_SLASH:
            # Skip check as it can be useful to start a URL pattern with a slash
            # when APPEND_SLASH=False.
            return []
        if regex_pattern.startswith(('/', '^/', '^\\/')) and not regex_pattern.endswith('/'):
            warning = Warning(
                "Your URL pattern {} has a route beginning with a '/'. Remove this "
                "slash as it is unnecessary. If this pattern is targeted in an "
                "include(), ensure the include() pattern has a trailing '/'.".format(
                    self.describe()
                ),
                id="urls.W002",
            )
            return [warning]
        else:
            return []

class RegexPattern(CheckURLMixin):
    regex = LocaleRegexDescriptor('_regex')

    def __init__(self, regex, name=None, is_endpoint=False):
        self._regex = regex
        self._regex_dict = {}
        self._is_endpoint = is_endpoint
        self.name = name
        self.converters = {}

    def match(self, path):
        match = self.regex.search(path)
        if match:
            # If there are any named groups, use those as kwargs, ignoring
            # non-named groups. Otherwise, pass all non-named arguments as
            # positional arguments.
            kwargs = match.groupdict()
            args = () if kwargs else match.groups()
            return path[match.end():], args, kwargs
        return None

    def check(self):
        warnings = []
        warnings.extend(self._check_pattern_startswith_slash())
        if not self._is_endpoint:
            warnings.extend(self._check_include_trailing_dollar())
        return warnings

    def _check_include_trailing_dollar(self):
        regex_pattern = self.regex.pattern
        if regex_pattern.endswith('$') and not regex_pattern.endswith(r'\$'):
            return [Warning(
                "Your URL pattern {} uses include with a route ending with a '$'. "
                "Remove the dollar from the route to avoid problems including "
                "URLs.".format(self.describe()),
                id='urls.W001',
            )]
        else:
            return []

    def _compile(self, regex):
        """Compile and return the given regular expression."""
        try:
            return re.compile(regex)
        except re.error as e:
            raise ImproperlyConfigured(
                '"%s" is not a valid regular expression: %s' % (regex, e)
            )

    def __str__(self):
        return str(self._regex)

_PATH_PARAMETER_COMPONENT_RE = re.compile(
    r'<(?:(?P<converter>[^>:]+):)?(?P<parameter>\w+)>'
)

def _route_to_regex(route, is_endpoint=False):
    """
    Convert a path pattern into a regular expression. Return the regular
    expression and a dictionary mapping the capture names to the converters.
    For example, 'foo/<int:pk>' returns '^foo\\/(?P<pk>[0-9]+)'
    and {'pk': <django.urls.converters.IntConverter>}.
    """
    original_route = route
    parts = ['^']
    converters = {}
    while True:
        match = _PATH_PARAMETER_COMPONENT_RE.search(route)
        if not match:
            parts.append(re.escape(route))
            break
        parts.append(re.escape(route[:match.start()]))
        route = route[match.end():]
        parameter = match.group('parameter')
        if not parameter.isidentifier():
            raise ImproperlyConfigured(
                "URL route '%s' uses parameter name %r which isn't a valid "
                "Python identifier." % (original_route, parameter)
            )
        raw_converter = match.group('converter')
        if raw_converter is None:
            # If a converter isn't specified, the default is `str`.
            raw_converter = 'str'
        try:
            converter = get_converter(raw_converter)
        except KeyError as e:
            raise ImproperlyConfigured(
                "URL route '%s' uses invalid converter %s." % (original_route, e)
            )
        converters[parameter] = converter
        parts.append('(?P<' + parameter + '>' + converter.regex + ')')
    if is_endpoint:
        parts.append('$')
    return ''.join(parts), converters

class RoutePattern(CheckURLMixin):
    regex = LocaleRegexDescriptor('_route')

    def __init__(self, route, name=None, is_endpoint=False):
        self._route = route
        self._regex_dict = {}
        self._is_endpoint = is_endpoint
        self.name = name
        self.converters = _route_to_regex(str(route), is_endpoint)[1]

    def match(self, path):
        match = self.regex.search(path)
        if match:
            # RoutePattern doesn't allow non-named groups so args are ignored.
            kwargs = match.groupdict()
            for key, value in kwargs.items():
                converter = self.converters[key]
                try:
                    kwargs[key] = converter.to_python(value)
                except ValueError:
                    return None
            return path[match.end():], (), kwargs
        return None

    def check(self):
        warnings = self._check_pattern_startswith_slash()
        route = self._route
        if '(?P<' in route or route.startswith('^') or route.endswith('$'):

Answer: warnings.append(Warning(

<think>
The code is inside RoutePattern.check(). After initializing warnings and checking the route string for regex-like patterns, Django adds a warning if regex syntax is detected. The next line begins the warning creation, typically using warnings.append(Warning(...)). Therefore the immediate next line is the call to warnings.append with a Warning object.
</think>
warnings.append(Warning(


Context:
/*  Copyright 2010, 2011 Semantic Web Research Center, KAIST

This file is part of JHanNanum.

JHanNanum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

JHanNanum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with JHanNanum.  If not, see <http://www.gnu.org/licenses/>   */

package kr.ac.kaist.swrc.jhannanum.plugin.MajorPlugin.MorphAnalyzer.ChartMorphAnalyzer;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.LinkedList;
import java.util.StringTokenizer;

import kr.ac.kaist.swrc.jhannanum.share.Code;
import kr.ac.kaist.swrc.jhannanum.share.TagSet;

/**
 * TRIE data structure for morpheme dictionaries.
 * @author Sangwon Park (hudoni@world.kaist.ac.kr), CILab, SWRC, KAIST
 */
public class Trie {
	/**
	 * This class is for managing free nodes in the trie structure.
	 * @author Sangwon Park (hudoni@world.kaist.ac.kr), CILab, SWRC, KAIST
	 */
	public class FREE {
		/** the size of consecutive free nodes */
		public int size;

		/** the next index of free node */
		public int next_idx;
	}

	/**
	 * This class is for the information of morpheme
	 * @author Sangwon Park (hudoni@world.kaist.ac.kr), CILab, SWRC, KAIST
	 */
	public class INFO {
		/** morpheme tag ID */
		public int tag;

		/** phoneme */
		public int phoneme;
	}

	/**
	 * This class is for nodes of trie structure.
	 * @author Sangwon Park (hudoni@world.kaist.ac.kr), CILab, SWRC, KAIST
	 */
	public class TNODE {
		/** key - vowel, consonant, etc. */
		public char	key;

		/** the size of children */
		public short child_size;

		/** the index for the childern */
		public int child_idx;

		/** the list of morpheme information */
		public LinkedList<INFO> info_list = null;

		/** for managing free nodes */
		public FREE	free = new FREE();
	}

	/** the default buffer size for the system dictionary */
	final public static int DEFAULT_TRIE_BUF_SIZE_SYS = 1060000;

	/** the default buffer size for the user dictionary */
	final public static int DEFAULT_TRIE_BUF_SIZE_USER = 106000;

	/** the index of the free node */
	final public static int FREE_NODE = 0;

	/** the index of the start node */
	final public static int START_NODE = 1;

	/** the length of search result */
	public int search_end;

	/** the list for storing the path searched */
	public int[] search_idx = new int[256];

	/** the list of keys of the path searched */
	public char[] search_key = new char[256];

	/** the array for trie nodes */
	public TNODE[] trie_buf = null;

	/** the head of free node list */
	public FREE free_head = null;

	/** the head of node list */
	public TNODE node_head = null;

	/**
	 * Constructor.
	 * @param buf_size - the maximum number of trie nodes
	 */
	public Trie(int buf_size) {
		search_idx = new int[256];
		search_key = new char[256];
		search_end = 0;

		trie_buf = new TNODE[buf_size];
		for (int i = 0; i < buf_size; i++) {
			trie_buf[i] = new TNODE();
		}

		free_head = trie_buf[FREE_NODE].free;
		node_head = trie_buf[FREE_NODE];

		node_head.key = 0;
		node_head.child_size = 0;
		node_head.info_list = new LinkedList<INFO>();
		node_head.child_idx = 0;

		free_head.size = 0;
		free_head.next_idx = 1;

		// the node number 0 is not used
		trie_buf[1].free.size = buf_size - 1;
		trie_buf[1].free.next_idx = FREE_NODE;
	}

	/**
	 * Fetches the specified word.
	 * @param word - the word to fetch
	 * @return the trie node for the specified word
	 */
	public TNODE fetch(char[] word) {
		int idx;
		int x;

		x = search(word);
		if (x == 0) {
			return null;
		} else {
			idx = this.search_idx[x - 1];
			return trie_buf[idx];
		}
	}

	/**
	 * Gets the trie node on the specified index
	 * @param idx - index on the trie structure
	 * @return the trie node on the index
	 */
	public TNODE get_node(int idx) {
		return trie_buf[idx];
	}

	/**
	 * Allocates the trie nodes available as the specified size
	 * @param size - the number of nodes to allocate
	 * @return the start index of the allocated nodes, 0: failed to allocate
	 */
	public int node_alloc(int size) {
		int idx;
		int pidx;

		if (size <= 0) {
			System.err.println("node alloc: wrong size");
			return 0;
		}

		pidx = FREE_NODE;

		for (idx = free_head.next_idx; idx != FREE_NODE; idx = trie_buf[idx].free.next_idx) {
			if (trie_buf[idx].free.size >= size) {
				break;
			}
			pidx = idx;
		}

		if (idx == 0) {
			System.err.println("node alloc: no space");
			return 0;
		}

		if (pidx == FREE_NODE) {
			if (size == trie_buf[idx].free.size) {
				free_head.next_idx = trie_buf[idx].free.next_idx;
			} else {
				trie_buf[idx + size].free.size = trie_buf[idx].free.size - size;
				trie_buf[idx + size].free.next_idx = trie_buf[idx].free.next_idx;
				free_head.next_idx = idx + size;
			}
		} else {
			if(size == trie_buf[idx].free.size) {
				trie_buf[pidx].free.next_idx = trie_buf[idx].free.next_idx;
			} else {
				trie_buf[idx + size].free.size = trie_buf[idx].free.size - size;
				trie_buf[idx + size].free.next_idx = trie_buf[idx].free.next_idx;
				trie_buf[pidx].free.next_idx = idx + size;
			}
		}

		return idx;
	}

	/**
	 * It frees the nodes from the specified index.
	 * @param fidx - the start index of node group to free
	 * @param size - the number of nodes to free
	 */
	public void node_free(int fidx, int size)
	{
		int idx, pidx = 0;
		FREE start;

		if (size <= 0 || fidx <= FREE_NODE) {
			System.err.println("node_free: wrong parameter");
			System.exit(0);
		}

		idx = free_head.next_idx;
		if (idx == FREE_NODE) {
			// if there was no free nodes, simply updates the header pointer with the new free node
			free_head.next_idx = fidx;					// the start index of free nodes
			trie_buf[fidx].free.size = size;			// the size of free nodes
			trie_buf[fidx].free.next_idx = FREE_NODE;	// the end of the free node list
			return;
		}

		if (fidx < idx) {
			// the new free nodes are in front compared to the existing free node list
			free_head.next_idx	= fidx;
			if (idx == fidx + size) {
				// if they are consecutive, they are merged.
				trie_buf[fidx].free.size = size + trie_buf[idx].free.size;
				trie_buf[fidx].free.next_idx = trie_buf[idx].free.next_idx;
			} else {
				// if they are not consecutive, they are separated

Answer: trie_buf[fidx].free.size = size;

<think>
In node_free, when the new free block is before the existing list and not adjacent, we must initialize its FREE fields. After the comment about being separated, the code should set the size of the new free block before linking it to the next free node. Hence the next line is the assignment of size.
</think>
trie_buf[fidx].free.size = size;


Context:
# -*- coding: utf-8 -*-
# Copyright 2020 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
from collections import OrderedDict
import os
import re
from typing import Dict, Optional, Sequence, Tuple, Type, Union

from google.api_core import client_options as client_options_lib
from google.api_core import gapic_v1
from google.api_core import retry as retries
from google.auth import credentials as ga_credentials  # type: ignore
from google.auth.transport import mtls  # type: ignore
from google.auth.transport.grpc import SslCredentials  # type: ignore
from google.auth.exceptions import MutualTLSChannelError  # type: ignore
from google.oauth2 import service_account  # type: ignore

try:
    OptionalRetry = Union[retries.Retry, gapic_v1.method._MethodDefault]
except AttributeError:  # pragma: NO COVER
    OptionalRetry = Union[retries.Retry, object]  # type: ignore

from google.ads.googleads.v9.resources.types import asset_group
from google.ads.googleads.v9.services.types import asset_group_service
from google.rpc import status_pb2  # type: ignore
from .transports.base import AssetGroupServiceTransport, DEFAULT_CLIENT_INFO
from .transports.grpc import AssetGroupServiceGrpcTransport

class AssetGroupServiceClientMeta(type):
    """Metaclass for the AssetGroupService client.

    This provides class-level methods for building and retrieving
    support objects (e.g. transport) without polluting the client instance
    objects.
    """

    _transport_registry = (
        OrderedDict()
    )  # type: Dict[str, Type[AssetGroupServiceTransport]]
    _transport_registry["grpc"] = AssetGroupServiceGrpcTransport

    def get_transport_class(
        cls, label: str = None,
    ) -> Type[AssetGroupServiceTransport]:
        """Return an appropriate transport class.

        Args:
            label: The name of the desired transport. If none is
                provided, then the first transport in the registry is used.

        Returns:
            The transport class to use.
        """
        # If a specific transport is requested, return that one.
        if label:
            return cls._transport_registry[label]

        # No transport is requested; return the default (that is, the first one
        # in the dictionary).
        return next(iter(cls._transport_registry.values()))

class AssetGroupServiceClient(metaclass=AssetGroupServiceClientMeta):
    """Service to manage asset group"""

    @staticmethod
    def _get_default_mtls_endpoint(api_endpoint):
        """Convert api endpoint to mTLS endpoint.
        Convert "*.sandbox.googleapis.com" and "*.googleapis.com" to
        "*.mtls.sandbox.googleapis.com" and "*.mtls.googleapis.com" respectively.
        Args:
            api_endpoint (Optional[str]): the api endpoint to convert.
        Returns:
            str: converted mTLS api endpoint.
        """
        if not api_endpoint:
            return api_endpoint

        mtls_endpoint_re = re.compile(
            r"(?P<name>[^.]+)(?P<mtls>\.mtls)?(?P<sandbox>\.sandbox)?(?P<googledomain>\.googleapis\.com)?"
        )

        m = mtls_endpoint_re.match(api_endpoint)
        name, mtls, sandbox, googledomain = m.groups()
        if mtls or not googledomain:
            return api_endpoint

        if sandbox:
            return api_endpoint.replace(
                "sandbox.googleapis.com", "mtls.sandbox.googleapis.com"
            )

        return api_endpoint.replace(".googleapis.com", ".mtls.googleapis.com")

    DEFAULT_ENDPOINT = "googleads.googleapis.com"
    DEFAULT_MTLS_ENDPOINT = _get_default_mtls_endpoint.__func__(  # type: ignore
        DEFAULT_ENDPOINT
    )

    @classmethod
    def from_service_account_info(cls, info: dict, *args, **kwargs):
        """Creates an instance of this client using the provided credentials info.

        Args:
            info (dict): The service account private key info.
            args: Additional arguments to pass to the constructor.
            kwargs: Additional arguments to pass to the constructor.

        Returns:
            AssetGroupServiceClient: The constructed client.
        """
        credentials = service_account.Credentials.from_service_account_info(
            info
        )
        kwargs["credentials"] = credentials
        return cls(*args, **kwargs)

    @classmethod
    def from_service_account_file(cls, filename: str, *args, **kwargs):
        """Creates an instance of this client using the provided credentials
        file.

        Args:
            filename (str): The path to the service account private key json
                file.
            args: Additional arguments to pass to the constructor.
            kwargs: Additional arguments to pass to the constructor.

        Returns:
            AssetGroupServiceClient: The constructed client.
        """
        credentials = service_account.Credentials.from_service_account_file(
            filename
        )
        kwargs["credentials"] = credentials
        return cls(*args, **kwargs)

    from_service_account_json = from_service_account_file

    @property
    def transport(self) -> AssetGroupServiceTransport:
        """Return the transport used by the client instance.

        Returns:
            AssetGroupServiceTransport: The transport used by the client instance.
        """
        return self._transport

    def __enter__(self):
        return self

    def __exit__(self, type, value, traceback):
        """Releases underlying transport's resources.

        .. warning::
            ONLY use as a context manager if the transport is NOT shared
            with other clients! Exiting the with block will CLOSE the transport
            and may cause errors in other clients!
        """
        self.transport.close()

    @staticmethod
    def asset_group_path(customer_id: str, asset_group_id: str,) -> str:
        """Return a fully-qualified asset_group string."""
        return "customers/{customer_id}/assetGroups/{asset_group_id}".format(
            customer_id=customer_id, asset_group_id=asset_group_id,
        )

    @staticmethod
    def parse_asset_group_path(path: str) -> Dict[str, str]:
        """Parse a asset_group path into its component segments."""
        m = re.match(
            r"^customers/(?P<customer_id>.+?)/assetGroups/(?P<asset_group_id>.+?)$",
            path,
        )
        return m.groupdict() if m else {}

    @staticmethod
    def campaign_path(customer_id: str, campaign_id: str,) -> str:
        """Return a fully-qualified campaign string."""
        return "customers/{customer_id}/campaigns/{campaign_id}".format(
            customer_id=customer_id, campaign_id=campaign_id,
        )

    @staticmethod
    def parse_campaign_path(path: str) -> Dict[str, str]:
        """Parse a campaign path into its component segments."""
        m = re.match(
            r"^customers/(?P<customer_id>.+?)/campaigns/(?P<campaign_id>.+?)$",
            path,
        )
        return m.groupdict() if m else {}

    @staticmethod
    def common_billing_account_path(billing_account: str,) -> str:
        """Return a fully-qualified billing_account string."""
        return "billingAccounts/{billing_account}".format(
            billing_account=billing_account,
        )

    @staticmethod
    def parse_common_billing_account_path(path: str) -> Dict[str, str]:
        """Parse a billing_account path into its component segments."""
        m = re.match(r"^billingAccounts/(?P<billing_account>.+?)$", path)
        return m.groupdict() if m else {}

    @staticmethod
    def common_folder_path(folder: str,) -> str:
        """Return a fully-qualified folder string."""
        return "folders/{folder}".format(folder=folder,)

    @staticmethod
    def parse_common_folder_path(path: str) -> Dict[str, str]:
        """Parse a folder path into its component segments."""
        m = re.match(r"^folders/(?P<folder>.+?)$", path)
        return m.groupdict() if m else {}

    @staticmethod
    def common_organization_path(organization: str,) -> str:
        """Return a fully-qualified organization string."""
        return "organizations/{organization}".format(organization=organization,)

    @staticmethod
    def parse_common_organization_path(path: str) -> Dict[str, str]:
        """Parse a organization path into its component segments."""
        m = re.match(r"^organizations/(?P<organization>.+?)$", path)
        return m.groupdict() if m else {}

    @staticmethod
    def common_project_path(project: str,) -> str:
        """Return a fully-qualified project string."""
        return "projects/{project}".format(project=project,)

    @staticmethod
    def parse_common_project_path(path: str) -> Dict[str, str]:
        """Parse a project path into its component segments."""
        m = re.match(r"^projects/(?P<project>.+?)$", path)
        return m.groupdict() if m else {}

    @staticmethod
    def common_location_path(project: str, location: str,) -> str:
        """Return a fully-qualified location string."""
        return "projects/{project}/locations/{location}".format(
            project=project, location=location,
        )

    @staticmethod
    def parse_common_location_path(path: str) -> Dict[str, str]:
        """Parse a location path into its component segments."""
        m = re.match(
            r"^projects/(?P<project>.+?)/locations/(?P<location>.+?)$", path
        )
        return m.groupdict() if m else {}

    def __init__(
        self,
        *,

Answer: credentials: Optional[ga_credentials.Credentials] = None,

<think>
The __init__ method is being defined for the client class. After the opening parenthesis and the '*' indicating keyword-only arguments, the first typical argument is the credentials parameter. In Google client libraries, this is typed as Optional[ga_credentials.Credentials] with a default of None. Therefore the next line should declare this parameter.
</think>
credentials: Optional[ga_credentials.Credentials] = None,