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52 lines
1.9 KiB
Python
52 lines
1.9 KiB
Python
2 years ago
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from typing import Optional
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from pip._internal.models.format_control import FormatControl
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class SelectionPreferences:
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"""
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Encapsulates the candidate selection preferences for downloading
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and installing files.
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"""
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__slots__ = [
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"allow_yanked",
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"allow_all_prereleases",
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"format_control",
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"prefer_binary",
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"ignore_requires_python",
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]
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# Don't include an allow_yanked default value to make sure each call
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# site considers whether yanked releases are allowed. This also causes
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# that decision to be made explicit in the calling code, which helps
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# people when reading the code.
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def __init__(
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self,
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allow_yanked: bool,
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allow_all_prereleases: bool = False,
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format_control: Optional[FormatControl] = None,
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prefer_binary: bool = False,
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ignore_requires_python: Optional[bool] = None,
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) -> None:
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"""Create a SelectionPreferences object.
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:param allow_yanked: Whether files marked as yanked (in the sense
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of PEP 592) are permitted to be candidates for install.
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:param format_control: A FormatControl object or None. Used to control
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the selection of source packages / binary packages when consulting
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the index and links.
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:param prefer_binary: Whether to prefer an old, but valid, binary
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dist over a new source dist.
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:param ignore_requires_python: Whether to ignore incompatible
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"Requires-Python" values in links. Defaults to False.
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"""
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if ignore_requires_python is None:
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ignore_requires_python = False
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self.allow_yanked = allow_yanked
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self.allow_all_prereleases = allow_all_prereleases
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self.format_control = format_control
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self.prefer_binary = prefer_binary
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self.ignore_requires_python = ignore_requires_python
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