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Edit File: target_python.py
import sys from typing import List, Optional, Tuple from pip._vendor.packaging.tags import Tag from pip._internal.utils.compatibility_tags import get_supported, version_info_to_nodot from pip._internal.utils.misc import normalize_version_info class TargetPython: """ Encapsulates the properties of a Python interpreter one is targeting for a package install, download, etc. """ __slots__ = [ "_given_py_version_info", "abis", "implementation", "platforms", "py_version", "py_version_info", "_valid_tags", ] def __init__( self, platforms: Optional[List[str]] = None, py_version_info: Optional[Tuple[int, ...]] = None, abis: Optional[List[str]] = None, implementation: Optional[str] = None, ) -> None: """ :param platforms: A list of strings or None. If None, searches for packages that are supported by the current system. Otherwise, will find packages that can be built on the platforms passed in. These packages will only be downloaded for distribution: they will not be built locally. :param py_version_info: An optional tuple of ints representing the Python version information to use (e.g. `sys.version_info[:3]`). This can have length 1, 2, or 3 when provided. :param abis: A list of strings or None. This is passed to compatibility_tags.py's get_supported() function as is. :param implementation: A string or None. This is passed to compatibility_tags.py's get_supported() function as is. """ # Store the given py_version_info for when we call get_supported(). self._given_py_version_info = py_version_info if py_version_info is None: py_version_info = sys.version_info[:3] else: py_version_info = normalize_version_info(py_version_info) py_version = ".".join(map(str, py_version_info[:2])) self.abis = abis self.implementation = implementation self.platforms = platforms self.py_version = py_version self.py_version_info = py_version_info # This is used to cache the return value of get_tags(). self._valid_tags: Optional[List[Tag]] = None def format_given(self) -> str: """ Format the given, non-None attributes for display. """ display_version = None if self._given_py_version_info is not None: display_version = ".".join( str(part) for part in self._given_py_version_info ) key_values = [ ("platforms", self.platforms), ("version_info", display_version), ("abis", self.abis), ("implementation", self.implementation), ] return " ".join( f"{key}={value!r}" for key, value in key_values if value is not None ) def get_tags(self) -> List[Tag]: """ Return the supported PEP 425 tags to check wheel candidates against. The tags are returned in order of preference (most preferred first). """ if self._valid_tags is None: # Pass versions=None if no py_version_info was given since # versions=None uses special default logic. py_version_info = self._given_py_version_info if py_version_info is None: version = None else: version = version_info_to_nodot(py_version_info) tags = get_supported( version=version, platforms=self.platforms, abis=self.abis, impl=self.implementation, ) self._valid_tags = tags return self._valid_tags