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from __future__ import annotations |
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import warnings |
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from pathlib import Path |
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from typing import AbstractSet |
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from pocketutils.core.exceptions import NotConstructableError |
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8
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9
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class WarningsConfig: |
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""" |
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Convenient API to add warning filters. |
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Also provides :meth:`simplify_format`, which sets a less-verbose warning formatter. |
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Example: |
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>>> ( |
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GlobalWarningUtils.simplify_format() |
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.filter_common() |
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.never("Number of features differ") |
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) |
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""" |
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def __init__(self): |
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raise NotConstructableError(f"Do not instantiate {self.__class__.__name__}") |
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@classmethod |
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def simplify_format(cls) -> __qualname__: |
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""" |
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Common initialization, including setting a better formatter that doesn't say "WARNING:py.warnings:". |
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""" |
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def new_formatter(message, category, filename, lineno, line=None): |
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cat = category.__name__.replace("Warning", "") |
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s = f"{Path(filename).name}:{lineno}: {cat}: {message}" |
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return s.replace("WARNING:py.warnings:", "") |
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warnings.formatwarning = new_formatter |
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return cls |
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@classmethod |
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def filter(cls, **kwargs) -> __qualname__: |
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"""Same as warnings.filterwarnings.""" |
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warnings.filterwarnings(**kwargs) |
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return cls |
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@classmethod |
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def never(cls, *substrings: str) -> __qualname__: |
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"""Adds a filter containing this substring, never showing the warning.""" |
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for substring in substrings: |
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warnings.filterwarnings(message=".*?" + substring + ".*", action="ignore") |
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return cls |
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@classmethod |
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def once(cls, *substrings: str) -> __qualname__: |
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"""Adds a filter containing this substring, warning only once.""" |
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for substring in substrings: |
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warnings.filterwarnings(message=".*?" + substring + ".*", action="once") |
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return cls |
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@classmethod |
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def filter_common(cls) -> __qualname__: |
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""" |
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Adds filters for common unavoidable warnings from numpy, pandas, scikit-learn, etc. |
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See ``common_never_substrings`` and ``common_once_substrings``. |
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""" |
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return cls.never(*cls.common_never()).once(*cls.common_once()) |
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@classmethod |
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def common_never(cls) -> AbstractSet[str]: |
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return { |
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"libuv only supports millisecond timer resolution", |
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"or '1type' as a synonym of type is deprecated", |
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"Series.nonzero() is deprecated and will be removed in a future version", |
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"Monkey-patching ssl after ssl has already been imported may lead to errors", |
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"your performance may suffer as PyTables will pickle object types that it cannot map directly to c-types", |
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} |
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@classmethod |
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def common_once(cls) -> AbstractSet[str]: |
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81
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return { |
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"Trying to unpickle estimator", |
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} |
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85
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86
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__all__ = ["WarningsConfig"] |
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dmyersturnbull /
pocketutils
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