INSTRUCTION stringlengths 1 8.43k | RESPONSE stringlengths 75 104k |
|---|---|
For an ordered or unique index compute the slice indexer for input labels and step. | def slice_indexer(self, start=None, end=None, step=None, kind=None):
"""
For an ordered or unique index, compute the slice indexer for input
labels and step.
Parameters
----------
start : label, default None
If None, defaults to the beginning
end : la... |
If we have a float key and are not a floating index then try to cast to an int if equivalent. | def _maybe_cast_indexer(self, key):
"""
If we have a float key and are not a floating index, then try to cast
to an int if equivalent.
"""
if is_float(key) and not self.is_floating():
try:
ckey = int(key)
if ckey == key:
... |
If we are positional indexer validate that we have appropriate typed bounds must be an integer. | def _validate_indexer(self, form, key, kind):
"""
If we are positional indexer, validate that we have appropriate
typed bounds must be an integer.
"""
assert kind in ['ix', 'loc', 'getitem', 'iloc']
if key is None:
pass
elif is_integer(key):
... |
Calculate slice bound that corresponds to given label. | def get_slice_bound(self, label, side, kind):
"""
Calculate slice bound that corresponds to given label.
Returns leftmost (one-past-the-rightmost if ``side=='right'``) position
of given label.
Parameters
----------
label : object
side : {'left', 'right'}... |
Compute slice locations for input labels. | def slice_locs(self, start=None, end=None, step=None, kind=None):
"""
Compute slice locations for input labels.
Parameters
----------
start : label, default None
If None, defaults to the beginning
end : label, default None
If None, defaults to the... |
Make new Index with passed location ( - s ) deleted. | def delete(self, loc):
"""
Make new Index with passed location(-s) deleted.
Returns
-------
new_index : Index
"""
return self._shallow_copy(np.delete(self._data, loc)) |
Make new Index inserting new item at location. | def insert(self, loc, item):
"""
Make new Index inserting new item at location.
Follows Python list.append semantics for negative values.
Parameters
----------
loc : int
item : object
Returns
-------
new_index : Index
"""
... |
Make new Index with passed list of labels deleted. | def drop(self, labels, errors='raise'):
"""
Make new Index with passed list of labels deleted.
Parameters
----------
labels : array-like
errors : {'ignore', 'raise'}, default 'raise'
If 'ignore', suppress error and existing labels are dropped.
Return... |
Add in comparison methods. | def _add_comparison_methods(cls):
"""
Add in comparison methods.
"""
cls.__eq__ = _make_comparison_op(operator.eq, cls)
cls.__ne__ = _make_comparison_op(operator.ne, cls)
cls.__lt__ = _make_comparison_op(operator.lt, cls)
cls.__gt__ = _make_comparison_op(operator.... |
Add in the numeric add/ sub methods to disable. | def _add_numeric_methods_add_sub_disabled(cls):
"""
Add in the numeric add/sub methods to disable.
"""
cls.__add__ = make_invalid_op('__add__')
cls.__radd__ = make_invalid_op('__radd__')
cls.__iadd__ = make_invalid_op('__iadd__')
cls.__sub__ = make_invalid_op('__s... |
Add in numeric methods to disable other than add/ sub. | def _add_numeric_methods_disabled(cls):
"""
Add in numeric methods to disable other than add/sub.
"""
cls.__pow__ = make_invalid_op('__pow__')
cls.__rpow__ = make_invalid_op('__rpow__')
cls.__mul__ = make_invalid_op('__mul__')
cls.__rmul__ = make_invalid_op('__rmu... |
Validate if we can perform a numeric unary operation. | def _validate_for_numeric_unaryop(self, op, opstr):
"""
Validate if we can perform a numeric unary operation.
"""
if not self._is_numeric_dtype:
raise TypeError("cannot evaluate a numeric op "
"{opstr} for type: {typ}"
.... |
Return valid other ; evaluate or raise TypeError if we are not of the appropriate type. | def _validate_for_numeric_binop(self, other, op):
"""
Return valid other; evaluate or raise TypeError if we are not of
the appropriate type.
Notes
-----
This is an internal method called by ops.
"""
opstr = '__{opname}__'.format(opname=op.__name__)
... |
Add in numeric methods. | def _add_numeric_methods_binary(cls):
"""
Add in numeric methods.
"""
cls.__add__ = _make_arithmetic_op(operator.add, cls)
cls.__radd__ = _make_arithmetic_op(ops.radd, cls)
cls.__sub__ = _make_arithmetic_op(operator.sub, cls)
cls.__rsub__ = _make_arithmetic_op(ops... |
Add in numeric unary methods. | def _add_numeric_methods_unary(cls):
"""
Add in numeric unary methods.
"""
def _make_evaluate_unary(op, opstr):
def _evaluate_numeric_unary(self):
self._validate_for_numeric_unaryop(op, opstr)
attrs = self._get_attributes_dict()
... |
Add in logical methods. | def _add_logical_methods(cls):
"""
Add in logical methods.
"""
_doc = """
%(desc)s
Parameters
----------
*args
These parameters will be passed to numpy.%(outname)s.
**kwargs
These parameters will be passed to numpy.%(outnam... |
create and return a BaseGrouper which is an internal mapping of how to create the grouper indexers. This may be composed of multiple Grouping objects indicating multiple groupers | def _get_grouper(obj, key=None, axis=0, level=None, sort=True,
observed=False, mutated=False, validate=True):
"""
create and return a BaseGrouper, which is an internal
mapping of how to create the grouper indexers.
This may be composed of multiple Grouping objects, indicating
multip... |
Parameters ---------- obj: the subject object validate: boolean default True if True validate the grouper | def _get_grouper(self, obj, validate=True):
"""
Parameters
----------
obj : the subject object
validate : boolean, default True
if True, validate the grouper
Returns
-------
a tuple of binner, grouper, obj (possibly sorted)
"""
... |
given an object and the specifications setup the internal grouper for this particular specification | def _set_grouper(self, obj, sort=False):
"""
given an object and the specifications, setup the internal grouper
for this particular specification
Parameters
----------
obj : the subject object
sort : bool, default False
whether the resulting grouper s... |
Pickle ( serialize ) object to file. | def to_pickle(obj, path, compression='infer',
protocol=pickle.HIGHEST_PROTOCOL):
"""
Pickle (serialize) object to file.
Parameters
----------
obj : any object
Any python object.
path : str
File path where the pickled object will be stored.
compression : {'infer... |
Load pickled pandas object ( or any object ) from file. | def read_pickle(path, compression='infer'):
"""
Load pickled pandas object (or any object) from file.
.. warning::
Loading pickled data received from untrusted sources can be
unsafe. See `here <https://docs.python.org/3/library/pickle.html>`__.
Parameters
----------
path : str
... |
Return a masking array of same size/ shape as arr with entries equaling any member of values_to_mask set to True | def mask_missing(arr, values_to_mask):
"""
Return a masking array of same size/shape as arr
with entries equaling any member of values_to_mask set to True
"""
dtype, values_to_mask = infer_dtype_from_array(values_to_mask)
try:
values_to_mask = np.array(values_to_mask, dtype=dtype)
... |
Logic for the 1 - d interpolation. The result should be 1 - d inputs xvalues and yvalues will each be 1 - d arrays of the same length. | def interpolate_1d(xvalues, yvalues, method='linear', limit=None,
limit_direction='forward', limit_area=None, fill_value=None,
bounds_error=False, order=None, **kwargs):
"""
Logic for the 1-d interpolation. The result should be 1-d, inputs
xvalues and yvalues will each... |
Passed off to scipy. interpolate. interp1d. method is scipy s kind. Returns an array interpolated at new_x. Add any new methods to the list in _clean_interp_method. | def _interpolate_scipy_wrapper(x, y, new_x, method, fill_value=None,
bounds_error=False, order=None, **kwargs):
"""
Passed off to scipy.interpolate.interp1d. method is scipy's kind.
Returns an array interpolated at new_x. Add any new methods to
the list in _clean_interp_m... |
Convenience function for interpolate. BPoly. from_derivatives. | def _from_derivatives(xi, yi, x, order=None, der=0, extrapolate=False):
"""
Convenience function for interpolate.BPoly.from_derivatives.
Construct a piecewise polynomial in the Bernstein basis, compatible
with the specified values and derivatives at breakpoints.
Parameters
----------
xi : ... |
Convenience function for akima interpolation. xi and yi are arrays of values used to approximate some function f with yi = f ( xi ). | def _akima_interpolate(xi, yi, x, der=0, axis=0):
"""
Convenience function for akima interpolation.
xi and yi are arrays of values used to approximate some function f,
with ``yi = f(xi)``.
See `Akima1DInterpolator` for details.
Parameters
----------
xi : array_like
A sorted lis... |
Perform an actual interpolation of values values will be make 2 - d if needed fills inplace returns the result. | def interpolate_2d(values, method='pad', axis=0, limit=None, fill_value=None,
dtype=None):
"""
Perform an actual interpolation of values, values will be make 2-d if
needed fills inplace, returns the result.
"""
transf = (lambda x: x) if axis == 0 else (lambda x: x.T)
# resha... |
Cast values to a dtype that algos. pad and algos. backfill can handle. | def _cast_values_for_fillna(values, dtype):
"""
Cast values to a dtype that algos.pad and algos.backfill can handle.
"""
# TODO: for int-dtypes we make a copy, but for everything else this
# alters the values in-place. Is this intentional?
if (is_datetime64_dtype(dtype) or is_datetime64tz_dty... |
If this is a reversed op then flip x y | def fill_zeros(result, x, y, name, fill):
"""
If this is a reversed op, then flip x,y
If we have an integer value (or array in y)
and we have 0's, fill them with the fill,
return the result.
Mask the nan's from x.
"""
if fill is None or is_float_dtype(result):
return result
... |
Set results of 0/ 0 or 0// 0 to np. nan regardless of the dtypes of the numerator or the denominator. | def mask_zero_div_zero(x, y, result, copy=False):
"""
Set results of 0 / 0 or 0 // 0 to np.nan, regardless of the dtypes
of the numerator or the denominator.
Parameters
----------
x : ndarray
y : ndarray
result : ndarray
copy : bool (default False)
Whether to always create a... |
Fill nulls caused by division by zero casting to a diffferent dtype if necessary. | def dispatch_missing(op, left, right, result):
"""
Fill nulls caused by division by zero, casting to a diffferent dtype
if necessary.
Parameters
----------
op : function (operator.add, operator.div, ...)
left : object (Index for non-reversed ops)
right : object (Index fof reversed ops)
... |
Get indexers of values that won t be filled because they exceed the limits. | def _interp_limit(invalid, fw_limit, bw_limit):
"""
Get indexers of values that won't be filled
because they exceed the limits.
Parameters
----------
invalid : boolean ndarray
fw_limit : int or None
forward limit to index
bw_limit : int or None
backward limit to index
... |
[ True True False True False ] 2 - > | def _rolling_window(a, window):
"""
[True, True, False, True, False], 2 ->
[
[True, True],
[True, False],
[False, True],
[True, False],
]
"""
# https://stackoverflow.com/a/6811241
shape = a.shape[:-1] + (a.shape[-1] - window + 1, window)
strides = a.stri... |
Return console size as tuple = ( width height ). | def get_console_size():
"""Return console size as tuple = (width, height).
Returns (None,None) in non-interactive session.
"""
from pandas import get_option
display_width = get_option('display.width')
# deprecated.
display_height = get_option('display.max_rows')
# Consider
# inter... |
check if we re running in an interactive shell | def in_interactive_session():
""" check if we're running in an interactive shell
returns True if running under python/ipython interactive shell
"""
from pandas import get_option
def check_main():
try:
import __main__ as main
except ModuleNotFoundError:
retur... |
Code the categories to ensure we can groupby for categoricals. | def recode_for_groupby(c, sort, observed):
"""
Code the categories to ensure we can groupby for categoricals.
If observed=True, we return a new Categorical with the observed
categories only.
If sort=False, return a copy of self, coded with categories as
returned by .unique(), followed by any c... |
Reverse the codes_to_groupby to account for sort/ observed. | def recode_from_groupby(c, sort, ci):
"""
Reverse the codes_to_groupby to account for sort / observed.
Parameters
----------
c : Categorical
sort : boolean
The value of the sort parameter groupby was called with.
ci : CategoricalIndex
The codes / categories to recode
Re... |
return our implementation | def get_engine(engine):
""" return our implementation """
if engine == 'auto':
engine = get_option('io.parquet.engine')
if engine == 'auto':
# try engines in this order
try:
return PyArrowImpl()
except ImportError:
pass
try:
retu... |
Write a DataFrame to the parquet format. | def to_parquet(df, path, engine='auto', compression='snappy', index=None,
partition_cols=None, **kwargs):
"""
Write a DataFrame to the parquet format.
Parameters
----------
path : str
File path or Root Directory path. Will be used as Root Directory path
while writing ... |
Load a parquet object from the file path returning a DataFrame. | def read_parquet(path, engine='auto', columns=None, **kwargs):
"""
Load a parquet object from the file path, returning a DataFrame.
.. versionadded 0.21.0
Parameters
----------
path : string
File path
engine : {'auto', 'pyarrow', 'fastparquet'}, default 'auto'
Parquet libra... |
Generate bin edge offsets and bin labels for one array using another array which has bin edge values. Both arrays must be sorted. | def generate_bins_generic(values, binner, closed):
"""
Generate bin edge offsets and bin labels for one array using another array
which has bin edge values. Both arrays must be sorted.
Parameters
----------
values : array of values
binner : a comparable array of values representing bins int... |
Groupby iterator | def get_iterator(self, data, axis=0):
"""
Groupby iterator
Returns
-------
Generator yielding sequence of (name, subsetted object)
for each group
"""
splitter = self._get_splitter(data, axis=axis)
keys = self._get_group_keys()
for key, (i,... |
dict { group name - > group indices } | def indices(self):
""" dict {group name -> group indices} """
if len(self.groupings) == 1:
return self.groupings[0].indices
else:
label_list = [ping.labels for ping in self.groupings]
keys = [com.values_from_object(ping.group_index)
for pin... |
Compute group sizes | def size(self):
"""
Compute group sizes
"""
ids, _, ngroup = self.group_info
ids = ensure_platform_int(ids)
if ngroup:
out = np.bincount(ids[ids != -1], minlength=ngroup)
else:
out = []
return Series(out,
inde... |
dict { group name - > group labels } | def groups(self):
""" dict {group name -> group labels} """
if len(self.groupings) == 1:
return self.groupings[0].groups
else:
to_groupby = lzip(*(ping.grouper for ping in self.groupings))
to_groupby = Index(to_groupby)
return self.axis.groupby(to_... |
dict { group name - > group labels } | def groups(self):
""" dict {group name -> group labels} """
# this is mainly for compat
# GH 3881
result = {key: value for key, value in zip(self.binlabels, self.bins)
if key is not NaT}
return result |
Groupby iterator | def get_iterator(self, data, axis=0):
"""
Groupby iterator
Returns
-------
Generator yielding sequence of (name, subsetted object)
for each group
"""
if isinstance(data, NDFrame):
slicer = lambda start, edge: data._slice(
slice... |
Normalize semi - structured JSON data into a flat table. | def json_normalize(data, record_path=None, meta=None,
meta_prefix=None,
record_prefix=None,
errors='raise',
sep='.'):
"""
Normalize semi-structured JSON data into a flat table.
Parameters
----------
data : dict or list of d... |
Reshape long - format data to wide. Generalized inverse of DataFrame. pivot | def lreshape(data, groups, dropna=True, label=None):
"""
Reshape long-format data to wide. Generalized inverse of DataFrame.pivot
Parameters
----------
data : DataFrame
groups : dict
{new_name : list_of_columns}
dropna : boolean, default True
Examples
--------
>>> data ... |
r Wide panel to long format. Less flexible but more user - friendly than melt. | def wide_to_long(df, stubnames, i, j, sep="", suffix=r'\d+'):
r"""
Wide panel to long format. Less flexible but more user-friendly than melt.
With stubnames ['A', 'B'], this function expects to find one or more
group of columns with format
A-suffix1, A-suffix2,..., B-suffix1, B-suffix2,...
You ... |
Safe get multiple indices translate keys for datelike to underlying repr. | def _get_indices(self, names):
"""
Safe get multiple indices, translate keys for
datelike to underlying repr.
"""
def get_converter(s):
# possibly convert to the actual key types
# in the indices, could be a Timestamp or a np.datetime64
if isi... |
Create group based selection. | def _set_group_selection(self):
"""
Create group based selection.
Used when selection is not passed directly but instead via a grouper.
NOTE: this should be paired with a call to _reset_group_selection
"""
grp = self.grouper
if not (self.as_index and
... |
Construct NDFrame from group with provided name. | def get_group(self, name, obj=None):
"""
Construct NDFrame from group with provided name.
Parameters
----------
name : object
the name of the group to get as a DataFrame
obj : NDFrame, default None
the NDFrame to take the DataFrame out of. If
... |
Parameters ---------- ascending: bool default True If False number in reverse from length of group - 1 to 0. | def _cumcount_array(self, ascending=True):
"""
Parameters
----------
ascending : bool, default True
If False, number in reverse, from length of group - 1 to 0.
Notes
-----
this is currently implementing sort=False
(though the default is sort=T... |
Try to cast the result to our obj original type we may have roundtripped through object in the mean - time. | def _try_cast(self, result, obj, numeric_only=False):
"""
Try to cast the result to our obj original type,
we may have roundtripped through object in the mean-time.
If numeric_only is True, then only try to cast numerics
and not datetimelikes.
"""
if obj.ndim > ... |
Parameters: ----------- func_nm: str The name of the aggregation function being performed | def _transform_should_cast(self, func_nm):
"""
Parameters:
-----------
func_nm: str
The name of the aggregation function being performed
Returns:
--------
bool
Whether transform should attempt to cast the result of aggregation
"""
... |
Shared func to call any/ all Cython GroupBy implementations. | def _bool_agg(self, val_test, skipna):
"""
Shared func to call any / all Cython GroupBy implementations.
"""
def objs_to_bool(vals: np.ndarray) -> Tuple[np.ndarray, Type]:
if is_object_dtype(vals):
vals = np.array([bool(x) for x in vals])
else:
... |
Compute mean of groups excluding missing values. | def mean(self, *args, **kwargs):
"""
Compute mean of groups, excluding missing values.
Returns
-------
pandas.Series or pandas.DataFrame
%(see_also)s
Examples
--------
>>> df = pd.DataFrame({'A': [1, 1, 2, 1, 2],
... 'B'... |
Compute median of groups excluding missing values. | def median(self, **kwargs):
"""
Compute median of groups, excluding missing values.
For multiple groupings, the result index will be a MultiIndex
"""
try:
return self._cython_agg_general('median', **kwargs)
except GroupByError:
raise
excep... |
Compute standard deviation of groups excluding missing values. | def std(self, ddof=1, *args, **kwargs):
"""
Compute standard deviation of groups, excluding missing values.
For multiple groupings, the result index will be a MultiIndex.
Parameters
----------
ddof : integer, default 1
degrees of freedom
"""
... |
Compute variance of groups excluding missing values. | def var(self, ddof=1, *args, **kwargs):
"""
Compute variance of groups, excluding missing values.
For multiple groupings, the result index will be a MultiIndex.
Parameters
----------
ddof : integer, default 1
degrees of freedom
"""
nv.validat... |
Compute standard error of the mean of groups excluding missing values. | def sem(self, ddof=1):
"""
Compute standard error of the mean of groups, excluding missing values.
For multiple groupings, the result index will be a MultiIndex.
Parameters
----------
ddof : integer, default 1
degrees of freedom
"""
return s... |
Compute group sizes. | def size(self):
"""
Compute group sizes.
"""
result = self.grouper.size()
if isinstance(self.obj, Series):
result.name = getattr(self.obj, 'name', None)
return result |
Add numeric operations to the GroupBy generically. | def _add_numeric_operations(cls):
"""
Add numeric operations to the GroupBy generically.
"""
def groupby_function(name, alias, npfunc,
numeric_only=True, _convert=False,
min_count=-1):
_local_template = "Compute %(f)... |
Provide resampling when using a TimeGrouper. | def resample(self, rule, *args, **kwargs):
"""
Provide resampling when using a TimeGrouper.
Given a grouper, the function resamples it according to a string
"string" -> "frequency".
See the :ref:`frequency aliases <timeseries.offset_aliases>`
documentation for more deta... |
Return a rolling grouper providing rolling functionality per group. | def rolling(self, *args, **kwargs):
"""
Return a rolling grouper, providing rolling functionality per group.
"""
from pandas.core.window import RollingGroupby
return RollingGroupby(self, *args, **kwargs) |
Return an expanding grouper providing expanding functionality per group. | def expanding(self, *args, **kwargs):
"""
Return an expanding grouper, providing expanding
functionality per group.
"""
from pandas.core.window import ExpandingGroupby
return ExpandingGroupby(self, *args, **kwargs) |
Shared function for pad and backfill to call Cython method. | def _fill(self, direction, limit=None):
"""
Shared function for `pad` and `backfill` to call Cython method.
Parameters
----------
direction : {'ffill', 'bfill'}
Direction passed to underlying Cython function. `bfill` will cause
values to be filled backwar... |
Take the nth row from each group if n is an int or a subset of rows if n is a list of ints. | def nth(self, n, dropna=None):
"""
Take the nth row from each group if n is an int, or a subset of rows
if n is a list of ints.
If dropna, will take the nth non-null row, dropna is either
Truthy (if a Series) or 'all', 'any' (if a DataFrame);
this is equivalent to callin... |
Return group values at the given quantile a la numpy. percentile. | def quantile(self, q=0.5, interpolation='linear'):
"""
Return group values at the given quantile, a la numpy.percentile.
Parameters
----------
q : float or array-like, default 0.5 (50% quantile)
Value(s) between 0 and 1 providing the quantile(s) to compute.
i... |
Number each group from 0 to the number of groups - 1. | def ngroup(self, ascending=True):
"""
Number each group from 0 to the number of groups - 1.
This is the enumerative complement of cumcount. Note that the
numbers given to the groups match the order in which the groups
would be seen when iterating over the groupby object, not th... |
Number each item in each group from 0 to the length of that group - 1. | def cumcount(self, ascending=True):
"""
Number each item in each group from 0 to the length of that group - 1.
Essentially this is equivalent to
>>> self.apply(lambda x: pd.Series(np.arange(len(x)), x.index))
Parameters
----------
ascending : bool, default True... |
Provide the rank of values within each group. | def rank(self, method='average', ascending=True, na_option='keep',
pct=False, axis=0):
"""
Provide the rank of values within each group.
Parameters
----------
method : {'average', 'min', 'max', 'first', 'dense'}, default 'average'
* average: average rank... |
Cumulative product for each group. | def cumprod(self, axis=0, *args, **kwargs):
"""
Cumulative product for each group.
"""
nv.validate_groupby_func('cumprod', args, kwargs,
['numeric_only', 'skipna'])
if axis != 0:
return self.apply(lambda x: x.cumprod(axis=axis, **kwarg... |
Cumulative min for each group. | def cummin(self, axis=0, **kwargs):
"""
Cumulative min for each group.
"""
if axis != 0:
return self.apply(lambda x: np.minimum.accumulate(x, axis))
return self._cython_transform('cummin', numeric_only=False) |
Cumulative max for each group. | def cummax(self, axis=0, **kwargs):
"""
Cumulative max for each group.
"""
if axis != 0:
return self.apply(lambda x: np.maximum.accumulate(x, axis))
return self._cython_transform('cummax', numeric_only=False) |
Get result for Cythonized functions. | def _get_cythonized_result(self, how, grouper, aggregate=False,
cython_dtype=None, needs_values=False,
needs_mask=False, needs_ngroups=False,
result_is_index=False,
pre_processing=None, post_proce... |
Shift each group by periods observations. | def shift(self, periods=1, freq=None, axis=0, fill_value=None):
"""
Shift each group by periods observations.
Parameters
----------
periods : integer, default 1
number of periods to shift
freq : frequency string
axis : axis to shift, default 0
... |
Return first n rows of each group. | def head(self, n=5):
"""
Return first n rows of each group.
Essentially equivalent to ``.apply(lambda x: x.head(n))``,
except ignores as_index flag.
%(see_also)s
Examples
--------
>>> df = pd.DataFrame([[1, 2], [1, 4], [5, 6]],
... |
Return last n rows of each group. | def tail(self, n=5):
"""
Return last n rows of each group.
Essentially equivalent to ``.apply(lambda x: x.tail(n))``,
except ignores as_index flag.
%(see_also)s
Examples
--------
>>> df = pd.DataFrame([['a', 1], ['a', 2], ['b', 1], ['b', 2]],
... |
If holiday falls on Saturday use following Monday instead ; if holiday falls on Sunday use Monday instead | def next_monday(dt):
"""
If holiday falls on Saturday, use following Monday instead;
if holiday falls on Sunday, use Monday instead
"""
if dt.weekday() == 5:
return dt + timedelta(2)
elif dt.weekday() == 6:
return dt + timedelta(1)
return dt |
For second holiday of two adjacent ones! If holiday falls on Saturday use following Monday instead ; if holiday falls on Sunday or Monday use following Tuesday instead ( because Monday is already taken by adjacent holiday on the day before ) | def next_monday_or_tuesday(dt):
"""
For second holiday of two adjacent ones!
If holiday falls on Saturday, use following Monday instead;
if holiday falls on Sunday or Monday, use following Tuesday instead
(because Monday is already taken by adjacent holiday on the day before)
"""
dow = dt.we... |
If holiday falls on Saturday or Sunday use previous Friday instead. | def previous_friday(dt):
"""
If holiday falls on Saturday or Sunday, use previous Friday instead.
"""
if dt.weekday() == 5:
return dt - timedelta(1)
elif dt.weekday() == 6:
return dt - timedelta(2)
return dt |
If holiday falls on Sunday or Saturday use day thereafter ( Monday ) instead. Needed for holidays such as Christmas observation in Europe | def weekend_to_monday(dt):
"""
If holiday falls on Sunday or Saturday,
use day thereafter (Monday) instead.
Needed for holidays such as Christmas observation in Europe
"""
if dt.weekday() == 6:
return dt + timedelta(1)
elif dt.weekday() == 5:
return dt + timedelta(2)
retu... |
If holiday falls on Saturday use day before ( Friday ) instead ; if holiday falls on Sunday use day thereafter ( Monday ) instead. | def nearest_workday(dt):
"""
If holiday falls on Saturday, use day before (Friday) instead;
if holiday falls on Sunday, use day thereafter (Monday) instead.
"""
if dt.weekday() == 5:
return dt - timedelta(1)
elif dt.weekday() == 6:
return dt + timedelta(1)
return dt |
returns next weekday used for observances | def next_workday(dt):
"""
returns next weekday used for observances
"""
dt += timedelta(days=1)
while dt.weekday() > 4:
# Mon-Fri are 0-4
dt += timedelta(days=1)
return dt |
returns previous weekday used for observances | def previous_workday(dt):
"""
returns previous weekday used for observances
"""
dt -= timedelta(days=1)
while dt.weekday() > 4:
# Mon-Fri are 0-4
dt -= timedelta(days=1)
return dt |
Calculate holidays observed between start date and end date | def dates(self, start_date, end_date, return_name=False):
"""
Calculate holidays observed between start date and end date
Parameters
----------
start_date : starting date, datetime-like, optional
end_date : ending date, datetime-like, optional
return_name : bool,... |
Get reference dates for the holiday. | def _reference_dates(self, start_date, end_date):
"""
Get reference dates for the holiday.
Return reference dates for the holiday also returning the year
prior to the start_date and year following the end_date. This ensures
that any offsets to be applied will yield the holidays... |
Apply the given offset/ observance to a DatetimeIndex of dates. | def _apply_rule(self, dates):
"""
Apply the given offset/observance to a DatetimeIndex of dates.
Parameters
----------
dates : DatetimeIndex
Dates to apply the given offset/observance rule
Returns
-------
Dates with rules applied
"""
... |
Returns a curve with holidays between start_date and end_date | def holidays(self, start=None, end=None, return_name=False):
"""
Returns a curve with holidays between start_date and end_date
Parameters
----------
start : starting date, datetime-like, optional
end : ending date, datetime-like, optional
return_name : bool, opti... |
Merge holiday calendars together. The base calendar will take precedence to other. The merge will be done based on each holiday s name. | def merge_class(base, other):
"""
Merge holiday calendars together. The base calendar
will take precedence to other. The merge will be done
based on each holiday's name.
Parameters
----------
base : AbstractHolidayCalendar
instance/subclass or array of ... |
Merge holiday calendars together. The caller s class rules take precedence. The merge will be done based on each holiday s name. | def merge(self, other, inplace=False):
"""
Merge holiday calendars together. The caller's class
rules take precedence. The merge will be done
based on each holiday's name.
Parameters
----------
other : holiday calendar
inplace : bool (default=False)
... |
Register an option in the package - wide pandas config object | def register_option(key, defval, doc='', validator=None, cb=None):
"""Register an option in the package-wide pandas config object
Parameters
----------
key - a fully-qualified key, e.g. "x.y.option - z".
defval - the default value of the option
doc - a string description of the o... |
Mark option key as deprecated if code attempts to access this option a warning will be produced using msg if given or a default message if not. if rkey is given any access to the key will be re - routed to rkey. | def deprecate_option(key, msg=None, rkey=None, removal_ver=None):
"""
Mark option `key` as deprecated, if code attempts to access this option,
a warning will be produced, using `msg` if given, or a default message
if not.
if `rkey` is given, any access to the key will be re-routed to `rkey`.
Ne... |
returns a list of keys matching pat | def _select_options(pat):
"""returns a list of keys matching `pat`
if pat=="all", returns all registered options
"""
# short-circuit for exact key
if pat in _registered_options:
return [pat]
# else look through all of them
keys = sorted(_registered_options.keys())
if pat == 'a... |
if key id deprecated and a replacement key defined will return the replacement key otherwise returns key as - is | def _translate_key(key):
"""
if key id deprecated and a replacement key defined, will return the
replacement key, otherwise returns `key` as - is
"""
d = _get_deprecated_option(key)
if d:
return d.rkey or key
else:
return key |
Builds a formatted description of a registered option and prints it | def _build_option_description(k):
""" Builds a formatted description of a registered option and prints it """
o = _get_registered_option(k)
d = _get_deprecated_option(k)
s = '{k} '.format(k=k)
if o.doc:
s += '\n'.join(o.doc.strip().split('\n'))
else:
s += 'No description avail... |
contextmanager for multiple invocations of API with a common prefix | def config_prefix(prefix):
"""contextmanager for multiple invocations of API with a common prefix
supported API functions: (register / get / set )__option
Warning: This is not thread - safe, and won't work properly if you import
the API functions into your module using the "from x import y" construct.... |
Generates ( prop value ) pairs from declarations | def parse(self, declarations_str):
"""Generates (prop, value) pairs from declarations
In a future version may generate parsed tokens from tinycss/tinycss2
"""
for decl in declarations_str.split(';'):
if not decl.strip():
continue
prop, sep, val = ... |
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