INSTRUCTION stringlengths 1 46.3k | RESPONSE stringlengths 75 80.2k |
|---|---|
load metadata only if needed | def _load_metadata(self):
"""load metadata only if needed"""
if self._schema is None:
self._schema = self._get_schema()
self.datashape = self._schema.datashape
self.dtype = self._schema.dtype
self.shape = self._schema.shape
self.npartitions = s... |
Return YAML representation of this data-source
The output may be roughly appropriate for inclusion in a YAML
catalog. This is a best-effort implementation
Parameters
----------
with_plugin: bool
If True, create a "plugins" section, for cases where this source
... | def yaml(self, with_plugin=False):
"""Return YAML representation of this data-source
The output may be roughly appropriate for inclusion in a YAML
catalog. This is a best-effort implementation
Parameters
----------
with_plugin: bool
If True, create a "plugin... |
Open resource and populate the source attributes. | def discover(self):
"""Open resource and populate the source attributes."""
self._load_metadata()
return dict(datashape=self.datashape,
dtype=self.dtype,
shape=self.shape,
npartitions=self.npartitions,
metadata=self... |
Return iterator over container fragments of data source | def read_chunked(self):
"""Return iterator over container fragments of data source"""
self._load_metadata()
for i in range(self.npartitions):
yield self._get_partition(i) |
Return a part of the data corresponding to i-th partition.
By default, assumes i should be an integer between zero and npartitions;
override for more complex indexing schemes. | def read_partition(self, i):
"""Return a part of the data corresponding to i-th partition.
By default, assumes i should be an integer between zero and npartitions;
override for more complex indexing schemes.
"""
self._load_metadata()
if i < 0 or i >= self.npartitions:
... |
Returns a hvPlot object to provide a high-level plotting API.
To display in a notebook, be sure to run ``intake.output_notebook()``
first. | def plot(self):
"""
Returns a hvPlot object to provide a high-level plotting API.
To display in a notebook, be sure to run ``intake.output_notebook()``
first.
"""
try:
from hvplot import hvPlot
except ImportError:
raise ImportError("The in... |
Save data from this source to local persistent storage | def persist(self, ttl=None, **kwargs):
"""Save data from this source to local persistent storage"""
from ..container import container_map
from ..container.persist import PersistStore
import time
if 'original_tok' in self.metadata:
raise ValueError('Cannot persist a so... |
Save this data for sharing with other people
Creates a copy of the data in a format appropriate for its container,
in the location specified (which can be remote, e.g., s3). Returns
a YAML representation of this saved dataset, so that it can be put
into a catalog file. | def export(self, path, **kwargs):
"""Save this data for sharing with other people
Creates a copy of the data in a format appropriate for its container,
in the location specified (which can be remote, e.g., s3). Returns
a YAML representation of this saved dataset, so that it can be put
... |
Return a catalog for the platform-specific user Intake directory | def load_user_catalog():
"""Return a catalog for the platform-specific user Intake directory"""
cat_dir = user_data_dir()
if not os.path.isdir(cat_dir):
return Catalog()
else:
return YAMLFilesCatalog(cat_dir) |
Return a catalog for the environment-specific Intake directory | def load_global_catalog():
"""Return a catalog for the environment-specific Intake directory"""
cat_dir = global_data_dir()
if not os.path.isdir(cat_dir):
return Catalog()
else:
return YAMLFilesCatalog(cat_dir) |
Fallback: ask conda in PATH for its prefix | def conda_prefix():
"""Fallback: ask conda in PATH for its prefix"""
try:
out = subprocess.check_output(['conda', 'info', '--json'])
return json.loads(out.decode())["default_prefix"]
except (subprocess.CalledProcessError, json.JSONDecodeError, OSError):
return False |
Return the global Intake catalog dir for the current environment | def global_data_dir():
"""Return the global Intake catalog dir for the current environment"""
prefix = False
if VIRTUALENV_VAR in os.environ:
prefix = os.environ[VIRTUALENV_VAR]
elif CONDA_VAR in os.environ:
prefix = sys.prefix
elif which('conda'):
# conda exists but is not a... |
Load a union of the user and global catalogs for convenience | def load_combo_catalog():
"""Load a union of the user and global catalogs for convenience"""
user_dir = user_data_dir()
global_dir = global_data_dir()
desc = 'Generated from data packages found on your intake search path'
cat_dirs = []
if os.path.isdir(user_dir):
cat_dirs.append(user_dir... |
Create Catalog from the given set of entries
Parameters
----------
entries : dict-like
A mapping of name:entry which supports dict-like functionality,
e.g., is derived from ``collections.abc.Mapping``.
kwargs : passed on the constructor
Things like me... | def from_dict(cls, entries, **kwargs):
"""
Create Catalog from the given set of entries
Parameters
----------
entries : dict-like
A mapping of name:entry which supports dict-like functionality,
e.g., is derived from ``collections.abc.Mapping``.
kw... |
Reload catalog if sufficient time has passed | def reload(self):
"""Reload catalog if sufficient time has passed"""
if time.time() - self.updated > self.ttl:
self.force_reload() |
Create a Catalog of a subset of entries based on a condition
Note that, whatever specific class this is performed on, the return
instance is a Catalog. The entries are passed unmodified, so they
will still reference the original catalog instance and include its
details such as directory... | def filter(self, func):
"""Create a Catalog of a subset of entries based on a condition
Note that, whatever specific class this is performed on, the return
instance is a Catalog. The entries are passed unmodified, so they
will still reference the original catalog instance and include it... |
Get all entries in this catalog and sub-catalogs
Parameters
----------
sofar: dict or None
Within recursion, use this dict for output
prefix: list of str or None
Names of levels already visited
depth: int
Number of levels to descend; needed to... | def walk(self, sofar=None, prefix=None, depth=2):
"""Get all entries in this catalog and sub-catalogs
Parameters
----------
sofar: dict or None
Within recursion, use this dict for output
prefix: list of str or None
Names of levels already visited
... |
Produce YAML version of this catalog.
Note that this is not the same as ``.yaml()``, which produces a YAML
block referring to this catalog. | def serialize(self):
"""
Produce YAML version of this catalog.
Note that this is not the same as ``.yaml()``, which produces a YAML
block referring to this catalog.
"""
import yaml
output = {"metadata": self.metadata, "sources": {},
"name": self... |
Output this catalog to a file as YAML
Parameters
----------
url : str
Location to save to, perhaps remote
storage_options : dict
Extra arguments for the file-system | def save(self, url, storage_options=None):
"""
Output this catalog to a file as YAML
Parameters
----------
url : str
Location to save to, perhaps remote
storage_options : dict
Extra arguments for the file-system
"""
from dask.bytes... |
Clear caches to force a reload. | def reset(self):
"Clear caches to force a reload."
self._page_cache.clear()
self._direct_lookup_cache.clear()
self._page_offset = 0
self.complete = self._catalog.page_size is None |
Iterate over items that are already cached. Perform no requests. | def cached_items(self):
"""
Iterate over items that are already cached. Perform no requests.
"""
for item in six.iteritems(self._page_cache):
yield item
for item in six.iteritems(self._direct_lookup_cache):
yield item |
Return a copy of the http_args
Adds auth headers and 'source_id', merges in params. | def _get_http_args(self, params):
"""
Return a copy of the http_args
Adds auth headers and 'source_id', merges in params.
"""
# Add the auth headers to any other headers
headers = self.http_args.get('headers', {})
if self.auth is not None:
auth_header... |
Fetch metadata from remote. Entries are fetched lazily. | def _load(self):
"""Fetch metadata from remote. Entries are fetched lazily."""
# This will not immediately fetch any sources (entries). It will lazily
# fetch sources from the server in paginated blocks when this Catalog
# is iterated over. It will fetch specific sources when they are
... |
Join together sequences of strings into English-friendly phrases using
a conjunction when appropriate.
Args:
seq (seq[str]) : a sequence of strings to nicely join
sep (str, optional) : a sequence delimiter to use (default: ", ")
conjunction (str or None, optional) : a conjunction to u... | def nice_join(seq, sep=", ", conjunction="or"):
''' Join together sequences of strings into English-friendly phrases using
a conjunction when appropriate.
Args:
seq (seq[str]) : a sequence of strings to nicely join
sep (str, optional) : a sequence delimiter to use (default: ", ")
... |
From the current state of ``registry``, create open_* functions | def make_open_functions():
"""From the current state of ``registry``, create open_* functions"""
# Create shortcut open methods
if hasattr(str, 'isidentifier'):
def isidentifier(x):
return x.isidentifier()
else:
IDENTIFIER_REGEX = re.compile(r'[a-zA-Z_][a-zA-Z0-9_]*$')
... |
Load the notebook extension
Parameters
----------
inline : boolean (optional)
Whether to inline JS code or load it from a CDN
logo : boolean (optional)
Whether to show the logo(s) | def output_notebook(inline=True, logo=False):
"""
Load the notebook extension
Parameters
----------
inline : boolean (optional)
Whether to inline JS code or load it from a CDN
logo : boolean (optional)
Whether to show the logo(s)
"""
try:
import hvplot
except... |
Create a Catalog object
Can load YAML catalog files, connect to an intake server, or create any
arbitrary Catalog subclass instance. In the general case, the user should
supply ``driver=`` with a value from the plugins registry which has a
container type of catalog. File locations can generally be remo... | def open_catalog(uri=None, **kwargs):
"""Create a Catalog object
Can load YAML catalog files, connect to an intake server, or create any
arbitrary Catalog subclass instance. In the general case, the user should
supply ``driver=`` with a value from the plugins registry which has a
container type of ... |
Save dataframe to local persistent store
Makes a parquet dataset out of the data using dask.dataframe.to_parquet.
This then becomes a data entry in the persisted datasets catalog.
Parameters
----------
source: a DataSource instance to save
name: str or None
... | def _persist(source, path, **kwargs):
"""Save dataframe to local persistent store
Makes a parquet dataset out of the data using dask.dataframe.to_parquet.
This then becomes a data entry in the persisted datasets catalog.
Parameters
----------
source: a DataSource instan... |
Save current configuration to file as YAML
If not given, uses current config directory, ``confdir``, which can be
set by INTAKE_CONF_DIR. | def save_conf(fn=None):
"""Save current configuration to file as YAML
If not given, uses current config directory, ``confdir``, which can be
set by INTAKE_CONF_DIR.
"""
if fn is None:
fn = cfile()
try:
os.makedirs(os.path.dirname(fn))
except (OSError, IOError):
pass
... |
Update global config from YAML file
If fn is None, looks in global config directory, which is either defined
by the INTAKE_CONF_DIR env-var or is ~/.intake/ . | def load_conf(fn=None):
"""Update global config from YAML file
If fn is None, looks in global config directory, which is either defined
by the INTAKE_CONF_DIR env-var or is ~/.intake/ .
"""
if fn is None:
fn = cfile()
if os.path.isfile(fn):
with open(fn) as f:
try:
... |
Return a list of directories from the intake path.
If a string, perhaps taken from an environment variable, then the
list of paths will be split on the character ":" for posix of ";" for
windows. Protocol indicators ("protocol://") will be ignored. | def intake_path_dirs(path):
"""Return a list of directories from the intake path.
If a string, perhaps taken from an environment variable, then the
list of paths will be split on the character ":" for posix of ";" for
windows. Protocol indicators ("protocol://") will be ignored.
"""
if isinstan... |
Analyse enviroment variables and update conf accordingly | def load_env():
"""Analyse enviroment variables and update conf accordingly"""
# environment variables take precedence over conf file
for key, envvar in [['cache_dir', 'INTAKE_CACHE_DIR'],
['catalog_path', 'INTAKE_PATH'],
['persist_path', 'INTAKE_PERSIST_PATH'... |
When the source gets updated, update the pane object | def source(self, source):
"""When the source gets updated, update the pane object"""
BaseView.source.fset(self, source)
if self.main_pane:
self.main_pane.object = self.contents
self.label_pane.object = self.label |
String representation of the source's description | def contents(self):
"""String representation of the source's description"""
if not self._source:
return ' ' * 100 # HACK - make sure that area is big
contents = self.source.describe()
return pretty_describe(contents) |
Inner function of reverse_format, returns the resolved value for each
field in pattern. | def _get_parts_of_format_string(resolved_string, literal_texts, format_specs):
"""
Inner function of reverse_format, returns the resolved value for each
field in pattern.
"""
_text = resolved_string
bits = []
if literal_texts[-1] != '' and _text.endswith(literal_texts[-1]):
_text = ... |
Reverse the string method format for a list of strings.
Given format_string and resolved_strings, for each resolved string
find arguments that would give
``format_string.format(**arguments) == resolved_string``.
Each item in the output corresponds to a new column with the key setting
the name and ... | def reverse_formats(format_string, resolved_strings):
"""
Reverse the string method format for a list of strings.
Given format_string and resolved_strings, for each resolved string
find arguments that would give
``format_string.format(**arguments) == resolved_string``.
Each item in the output ... |
Reverse the string method format.
Given format_string and resolved_string, find arguments that would
give ``format_string.format(**arguments) == resolved_string``
Parameters
----------
format_string : str
Format template string as used with str.format method
resolved_string : str
... | def reverse_format(format_string, resolved_string):
"""
Reverse the string method format.
Given format_string and resolved_string, find arguments that would
give ``format_string.format(**arguments) == resolved_string``
Parameters
----------
format_string : str
Format template strin... |
Convert pattern style paths to glob style paths
Returns path if path is not str
Parameters
----------
path : str
Path to data optionally containing format_strings
Returns
-------
glob : str
Path with any format strings replaced with *
Examples
--------
>>> pa... | def path_to_glob(path):
"""
Convert pattern style paths to glob style paths
Returns path if path is not str
Parameters
----------
path : str
Path to data optionally containing format_strings
Returns
-------
glob : str
Path with any format strings replaced with *
... |
Remove source information from path when using chaching
Returns None if path is not str
Parameters
----------
path : str
Path to data optionally containing format_strings
metadata : dict, optional
Extra arguments to the class, contains any cache information
Returns
-------... | def path_to_pattern(path, metadata=None):
"""
Remove source information from path when using chaching
Returns None if path is not str
Parameters
----------
path : str
Path to data optionally containing format_strings
metadata : dict, optional
Extra arguments to the class, c... |
Serializable function for fetching a data source partition
Parameters
----------
url: str
Server address
headers: dict
HTTP header parameters
source_id: str
ID of the source in the server's cache (unique per user)
container: str
Type of data, like "dataframe" one... | def get_partition(url, headers, source_id, container, partition):
"""Serializable function for fetching a data source partition
Parameters
----------
url: str
Server address
headers: dict
HTTP header parameters
source_id: str
ID of the source in the server's cache (uniqu... |
Flatten an arbitrarily deep list | def flatten(iterable):
"""Flatten an arbitrarily deep list"""
# likely not used
iterable = iter(iterable)
while True:
try:
item = next(iterable)
except StopIteration:
break
if isinstance(item, six.string_types):
yield item
continue... |
Clamp float between given range | def clamp(value, lower=0, upper=sys.maxsize):
"""Clamp float between given range"""
return max(lower, min(upper, value)) |
Render variables in context into the set of parameters with jinja2.
For variables that are not strings, nothing happens.
Parameters
----------
pars: dict
values are strings containing some jinja2 controls
context: dict
values to use while rendering
return_left: bool
whe... | def expand_templates(pars, context, return_left=False, client=False,
getenv=True, getshell=True):
"""
Render variables in context into the set of parameters with jinja2.
For variables that are not strings, nothing happens.
Parameters
----------
pars: dict
values ar... |
Compile env, client_env, shell and client_shell commands
Execution rules:
- env() and shell() execute where the cat is loaded, if getenv and getshell
are True, respectively
- client_env() and client_shell() execute only if client is True and
getenv/getshell are also True.
If both getenv an... | def expand_defaults(default, client=False, getenv=True, getshell=True):
"""Compile env, client_env, shell and client_shell commands
Execution rules:
- env() and shell() execute where the cat is loaded, if getenv and getshell
are True, respectively
- client_env() and client_shell() execute only if... |
Produce open arguments by merging various inputs
This function is called in the context of a catalog entry, when finalising
the arguments for instantiating the corresponding data source.
The three sets of inputs to be considered are:
- the arguments section of the original spec (params)
- UserPara... | def merge_pars(params, user_inputs, spec_pars, client=False, getenv=True,
getshell=True):
"""Produce open arguments by merging various inputs
This function is called in the context of a catalog entry, when finalising
the arguments for instantiating the corresponding data source.
The thr... |
Convert a value to a specific type.
If the value is already the given type, then the original value is
returned. If the value is None, then the default value given by the
type constructor is returned. Otherwise, the type constructor converts
and returns the value. | def coerce(dtype, value):
"""
Convert a value to a specific type.
If the value is already the given type, then the original value is
returned. If the value is None, then the default value given by the
type constructor is returned. Otherwise, the type constructor converts
and returns the value.
... |
Create either local direct data source or remote streamed source | def open_remote(url, entry, container, user_parameters, description, http_args,
page_size=None, auth=None, getenv=None, getshell=None):
"""Create either local direct data source or remote streamed source"""
from intake.container import container_map
if url.startswith('intake://'):
ur... |
Save list to files using encoding
encoder : None or one of str|json|pickle
None is equivalent to str | def _persist(source, path, encoder=None):
"""Save list to files using encoding
encoder : None or one of str|json|pickle
None is equivalent to str
"""
import posixpath
from dask.bytes import open_files
import dask
import pickle
import json
... |
Display the entry as a rich object in an IPython session. | def _ipython_display_(self):
"""Display the entry as a rich object in an IPython session."""
contents = self.describe()
display({ # noqa: F821
'application/json': contents,
'text/plain': pretty_describe(contents)
}, metadata={
'application/json': {'ro... |
Scan for Intake plugin packages and return a dict of plugins.
This function searches path (or sys.path) for packages with names that
start with plugin_prefix. Those modules will be imported and scanned for
subclasses of intake.source.base.Plugin. Any subclasses found will be
instantiated and returned... | def autodiscover(path=None, plugin_prefix='intake_'):
"""Scan for Intake plugin packages and return a dict of plugins.
This function searches path (or sys.path) for packages with names that
start with plugin_prefix. Those modules will be imported and scanned for
subclasses of intake.source.base.Plugin... |
Imports a module and returns dictionary of discovered Intake plugins.
Plugin classes are instantiated and added to the dictionary, keyed by the
name attribute of the plugin object. | def load_plugins_from_module(module_name):
"""Imports a module and returns dictionary of discovered Intake plugins.
Plugin classes are instantiated and added to the dictionary, keyed by the
name attribute of the plugin object.
"""
plugins = {}
try:
if module_name.endswith('.py'):
... |
Get a column of values for each field in pattern | def _set_pattern_columns(self, path_column):
"""Get a column of values for each field in pattern
"""
try:
# CategoricalDtype allows specifying known categories when
# creating objects. It was added in pandas 0.21.0.
from pandas.api.types import CategoricalDtyp... |
Set ``include_path_column`` in csv_kwargs and returns path column name | def _path_column(self):
"""Set ``include_path_column`` in csv_kwargs and returns path column name
"""
path_column = self._csv_kwargs.get('include_path_column')
if path_column is None:
# if path column name is not set by user, set to a unique string to
# avoid con... |
Open dataset using dask and use pattern fields to set new columns | def _open_dataset(self, urlpath):
"""Open dataset using dask and use pattern fields to set new columns
"""
import dask.dataframe
if self.pattern is None:
self._dataframe = dask.dataframe.read_csv(
urlpath, storage_options=self._storage_options,
... |
Do search and close panel | def do_search(self, arg=None):
"""Do search and close panel"""
new_cats = []
for cat in self.cats:
new_cat = cat.search(self.inputs.text,
depth=self.inputs.depth)
if len(list(new_cat)) > 0:
new_cats.append(new_cat)
... |
Save array to local persistent store
Makes a parquet dataset out of the data using zarr.
This then becomes a data entry in the persisted datasets catalog.
Only works locally for the moment.
Parameters
----------
source: a DataSource instance to save
name: str or... | def _persist(source, path, component=None, storage_options=None,
**kwargs):
"""Save array to local persistent store
Makes a parquet dataset out of the data using zarr.
This then becomes a data entry in the persisted datasets catalog.
Only works locally for the moment.
... |
When the source gets updated, update the the options in the selector | def source(self, source):
"""When the source gets updated, update the the options in the selector"""
BaseView.source.fset(self, source)
if self.select:
self.select.options = self.options |
Serializable function to take an OpenFile object and read lines | def get_file(f, decoder, read):
"""Serializable function to take an OpenFile object and read lines"""
with f as f:
if decoder is None:
return list(f)
else:
d = f.read() if read else f
out = decoder(d)
if isinstance(out, (tuple, list)):
... |
Case-insensitive search of a dictionary for key.
Returns the value if key match is found, otherwise default. | def get_case_insensitive(self, dictionary, key, default=None):
"""Case-insensitive search of a dictionary for key.
Returns the value if key match is found, otherwise default.
"""
lower_key = key.lower()
for k, v in dictionary.items():
if lower_key == k.lower():
... |
Path to local catalog file | def url(self):
"""Path to local catalog file"""
return os.path.join(self.path, self.main.value[0]) |
Check that inputted path is valid - set validator accordingly | def validate(self, arg=None):
"""Check that inputted path is valid - set validator accordingly"""
if os.path.isdir(self.path):
self.validator.object = None
else:
self.validator.object = ICONS['error'] |
Add cat and close panel | def add_cat(self, arg=None):
"""Add cat and close panel"""
try:
self.done_callback(self.cat)
self.visible = False
except Exception as e:
self.validator.object = ICONS['error']
raise e |
When tab changes remove error, and enable widget if on url tab | def tab_change(self, event):
"""When tab changes remove error, and enable widget if on url tab"""
self.remove_error()
if event.new == 1:
self.widget.disabled = False |
When visible changed, do setup or unwatch and call visible_callback | def visible(self, visible):
"""When visible changed, do setup or unwatch and call visible_callback"""
self._visible = visible
if visible and len(self.panel.objects) == 0:
self.setup()
self.select.visible = True
self.control_panel.extend(self.controls)
... |
When a catalog is selected, enable widgets that depend on that condition
and do done_callback | def callback(self, cats):
"""When a catalog is selected, enable widgets that depend on that condition
and do done_callback"""
enable = bool(cats)
if not enable:
# close search if it is visible
self.search.visible = False
enable_widget(self.search_widget, e... |
When the search control is toggled, set visibility and hand down cats | def on_click_search_widget(self, event):
""" When the search control is toggled, set visibility and hand down cats"""
self.search.cats = self.cats
self.search.visible = event.new
if self.search.visible:
self.search.watchers.append(
self.select.widget.link(self... |
Check for duplicate keys while loading YAML
https://gist.github.com/pypt/94d747fe5180851196eb | def no_duplicates_constructor(loader, node, deep=False):
"""Check for duplicate keys while loading YAML
https://gist.github.com/pypt/94d747fe5180851196eb
"""
mapping = {}
for key_node, value_node in node.value:
key = loader.construct_object(key_node, deep=deep)
value = loader.const... |
Get the object's class's name as package.module.Class | def classname(ob):
"""Get the object's class's name as package.module.Class"""
import inspect
if inspect.isclass(ob):
return '.'.join([ob.__module__, ob.__name__])
else:
return '.'.join([ob.__class__.__module__, ob.__class__.__name__]) |
Maintain dict ordering - but make string version prettier | def pretty_describe(object, nestedness=0, indent=2):
"""Maintain dict ordering - but make string version prettier"""
if not isinstance(object, dict):
return str(object)
sep = f'\n{" " * nestedness * indent}'
out = sep.join((f'{k}: {pretty_describe(v, nestedness + 1)}' for k, v in object.items())... |
Add to list of cats | def add(self, *args, **kwargs):
"""Add to list of cats"""
return self.cat.select.add(*args, **kwargs) |
Given an instance or list, coerce to list.
With optional preprocessing. | def coerce_to_list(items, preprocess=None):
"""Given an instance or list, coerce to list.
With optional preprocessing.
"""
if not isinstance(items, list):
items = [items]
if preprocess:
items = list(map(preprocess, items))
return items |
Display in a notebook or a server | def _repr_mimebundle_(self, *args, **kwargs):
"""Display in a notebook or a server"""
try:
if self.logo:
p = pn.Row(
self.logo_panel,
self.panel,
margin=0)
return p._repr_mimebundle_(*args, **kwargs)
... |
When visible changed, do setup or unwatch and call visible_callback | def visible(self, visible):
"""When visible changed, do setup or unwatch and call visible_callback"""
self._visible = visible
if visible and len(self.panel.objects) == 0:
self.setup()
self.panel.extend(self.children)
elif not visible and len(self.panel.objects) > ... |
Get rid of any lingering watchers and remove from list | def unwatch(self):
"""Get rid of any lingering watchers and remove from list"""
if self.watchers is not None:
unwatched = []
for watcher in self.watchers:
watcher.inst.param.unwatch(watcher)
unwatched.append(watcher)
self.watchers = [w ... |
Helper method to create options from list, or instance.
Applies preprocess method if available to create a uniform
output | def _create_options(self, items):
"""Helper method to create options from list, or instance.
Applies preprocess method if available to create a uniform
output
"""
return OrderedDict(map(lambda x: (x.name, x),
coerce_to_list(items, self.preprocess))) |
Set options from list, or instance of named item
Over-writes old options | def options(self, new):
"""Set options from list, or instance of named item
Over-writes old options
"""
options = self._create_options(new)
if self.widget.value:
self.widget.set_param(options=options, value=list(options.values())[:1])
else:
self.w... |
Add items to options | def add(self, items):
"""Add items to options"""
options = self._create_options(items)
for k, v in options.items():
if k in self.labels and v not in self.items:
options.pop(k)
count = 0
while f'{k}_{count}' in self.labels:
... |
Remove items from options | def remove(self, items):
"""Remove items from options"""
items = coerce_to_list(items)
new_options = {k: v for k, v in self.options.items() if v not in items}
self.widget.options = new_options
self.widget.param.trigger('options') |
Set selected from list or instance of object or name.
Over-writes existing selection | def selected(self, new):
"""Set selected from list or instance of object or name.
Over-writes existing selection
"""
def preprocess(item):
if isinstance(item, str):
return self.options[item]
return item
items = coerce_to_list(new, preproce... |
When the source gets updated, update the select widget | def source(self, source):
"""When the source gets updated, update the select widget"""
if isinstance(source, list):
# if source is a list, get first item or None
source = source[0] if len(source) > 0 else None
self._source = source |
When a source is selected, enable widgets that depend on that condition
and do done_callback | def callback(self, sources):
"""When a source is selected, enable widgets that depend on that condition
and do done_callback"""
enable = bool(sources)
if not enable:
self.plot_widget.value = False
enable_widget(self.plot_widget, enable)
if self.done_callback:... |
When the plot control is toggled, set visibility and hand down source | def on_click_plot_widget(self, event):
""" When the plot control is toggled, set visibility and hand down source"""
self.plot.source = self.sources
self.plot.visible = event.new
if self.plot.visible:
self.plot.watchers.append(
self.select.widget.link(self.plot... |
Utility for cleaning up paths. | def sanitize_path(path):
"""Utility for cleaning up paths."""
storage_option = infer_storage_options(path)
protocol = storage_option['protocol']
if protocol in ('http', 'https'):
# Most FSs remove the protocol but not HTTPFS. We need to strip
# it to match properly.
path = os.p... |
Read from input and write to output file in blocks | def _download(file_in, file_out, blocksize, output=False):
"""Read from input and write to output file in blocks"""
with warnings.catch_warnings():
warnings.filterwarnings('ignore')
if output:
try:
from tqdm.autonotebook import tqdm
except ImportError:
... |
Creates Cache objects from the cache_specs provided in the catalog yaml file
Parameters
----------
driver: str
Name of the plugin that can load catalog entry
specs: list
Specification for caching the data source. | def make_caches(driver, specs, catdir=None, cache_dir=None, storage_options={}):
"""
Creates Cache objects from the cache_specs provided in the catalog yaml file
Parameters
----------
driver: str
Name of the plugin that can load catalog entry
specs: list
Specification for cachi... |
Downloads data from a given url, generates a hashed filename,
logs metadata, and caches it locally.
Parameters
----------
urlpath: str, location of data
May be a local path, or remote path if including a protocol specifier
such as ``'s3://'``. May include glob w... | def load(self, urlpath, output=None, **kwargs):
"""
Downloads data from a given url, generates a hashed filename,
logs metadata, and caches it locally.
Parameters
----------
urlpath: str, location of data
May be a local path, or remote path if including a pr... |
Return set of local URLs if files already exist | def _from_metadata(self, urlpath):
"""Return set of local URLs if files already exist"""
md = self.get_metadata(urlpath)
if md is not None:
return [e['cache_path'] for e in md] |
Download a set of files | def _load(self, files_in, files_out, urlpath, meta=True):
"""Download a set of files"""
import dask
out = []
outnames = []
for file_in, file_out in zip(files_in, files_out):
cache_path = file_out.path
outnames.append(cache_path)
# If `_munge_p... |
Clears cache and metadata for a given urlpath.
Parameters
----------
urlpath: str, location of data
May be a local path, or remote path if including a protocol specifier
such as ``'s3://'``. May include glob wildcards. | def clear_cache(self, urlpath):
"""
Clears cache and metadata for a given urlpath.
Parameters
----------
urlpath: str, location of data
May be a local path, or remote path if including a protocol specifier
such as ``'s3://'``. May include glob wildcards.... |
Clears all cache and metadata. | def clear_all(self):
"""
Clears all cache and metadata.
"""
for urlpath in self._metadata.keys():
self.clear_cache(urlpath)
# Safely clean up anything else.
if not os.path.isdir(self._cache_dir):
return
for subdir in os.listdir(self._cache... |
Return set of local URLs if files already exist | def _from_metadata(self, urlpath):
"""Return set of local URLs if files already exist"""
md = self.get_metadata(urlpath)
if md is not None:
return [self._path(urlpath)] |
Load a Qt Designer .ui file and returns an instance of the user interface
Args:
uifile (str): Absolute path to .ui file
base_instance (QWidget): The widget into which UI widgets are loaded
Returns:
QWidget: the base instance | def setup_ui(uifile, base_instance=None):
"""Load a Qt Designer .ui file and returns an instance of the user interface
Args:
uifile (str): Absolute path to .ui file
base_instance (QWidget): The widget into which UI widgets are loaded
Returns:
QWidget: the base instance
"""
... |
Write dictionary to JSON | def write_json(dictionary, filename):
"""Write dictionary to JSON"""
with open(filename, 'w') as data_file:
json.dump(dictionary, data_file, indent=4, sort_keys=True)
print('--> Wrote ' + os.path.basename(filename)) |
Compare by iteration | def compare(dicts):
"""Compare by iteration"""
common_members = {}
common_keys = reduce(lambda x, y: x & y, map(dict.keys, dicts))
for k in common_keys:
common_members[k] = list(
reduce(lambda x, y: x & y, [set(d[k]) for d in dicts]))
return common_members |
Copies the QtGui list of PySide/PyQt4 into QtWidgets | def copy_qtgui_to_modules():
"""Copies the QtGui list of PySide/PyQt4 into QtWidgets"""
pyside_filepath = PREFIX + '/PySide.json'
pyqt4_filepath = PREFIX + '/PyQt4.json'
pyside = read_json(pyside_filepath)
pyqt4 = read_json(pyqt4_filepath)
# When Qt4 was moved to Qt5, they split QtGui into QtG... |
Sorts the keys and members | def sort_common_members():
"""Sorts the keys and members"""
filename = PREFIX + '/common_members.json'
sorted_json_data = {}
json_data = read_json(filename)
all_keys = []
for key, value in json_data.items():
all_keys.append(key)
sorted_keys = sorted(all_keys)
for key in sorted... |
Generate JSON with commonly shared members | def generate_common_members():
"""Generate JSON with commonly shared members"""
pyside = read_json(PREFIX + '/PySide.json')
pyside2 = read_json(PREFIX + '/PySide2.json')
pyqt4 = read_json(PREFIX + '/PyQt4.json')
pyqt5 = read_json(PREFIX + '/PyQt5.json')
dicts = [pyside, pyside2, pyqt4, pyqt5]
... |
Return blocks of code as list of dicts
Arguments:
fname (str): Relative name of caveats file | def parse(fname):
"""Return blocks of code as list of dicts
Arguments:
fname (str): Relative name of caveats file
"""
blocks = list()
with io.open(fname, "r", encoding="utf-8") as f:
in_block = False
current_block = None
current_header = ""
for line in f:
... |
Produce Python module from blocks of tests
Arguments:
blocks (list): Blocks of tests from func:`parse()` | def format_(blocks):
"""Produce Python module from blocks of tests
Arguments:
blocks (list): Blocks of tests from func:`parse()`
"""
tests = list()
function_count = 0 # For each test to have a unique name
for block in blocks:
# Validate docstring format of body
if n... |
Install a message handler that works in all bindings
Args:
handler: A function that takes 3 arguments, or None | def _qInstallMessageHandler(handler):
"""Install a message handler that works in all bindings
Args:
handler: A function that takes 3 arguments, or None
"""
def messageOutputHandler(*args):
# In Qt4 bindings, message handlers are passed 2 arguments
# In Qt5 bindings, message hand... |
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