from __future__ import absolute_import import logging from email.parser import FeedParser from pip._vendor import pkg_resources from pip._vendor.packaging import specifiers, version from pip._internal.exceptions import NoneMetadataError from pip._internal.utils.misc import display_path from pip._internal.utils.typing import MYPY_CHECK_RUNNING if MYPY_CHECK_RUNNING: from typing import Optional, Tuple from email.message import Message from pip._vendor.pkg_resources import Distribution logger = logging.getLogger(__name__) def check_requires_python(requires_python, version_info): # type: (Optional[str], Tuple[int, ...]) -> bool """ Check if the given Python version matches a "Requires-Python" specifier. :param version_info: A 3-tuple of ints representing a Python major-minor-micro version to check (e.g. `sys.version_info[:3]`). :return: `True` if the given Python version satisfies the requirement. Otherwise, return `False`. :raises InvalidSpecifier: If `requires_python` has an invalid format. """ if requires_python is None: # The package provides no information return True requires_python_specifier = specifiers.SpecifierSet(requires_python) python_version = version.parse('.'.join(map(str, version_info))) return python_version in requires_python_specifier def get_metadata(dist): # type: (Distribution) -> Message """ :raises NoneMetadataError: if the distribution reports `has_metadata()` True but `get_metadata()` returns None. """ metadata_name = 'METADATA' if (isinstance(dist, pkg_resources.DistInfoDistribution) and dist.has_metadata(metadata_name)): metadata = dist.get_metadata(metadata_name) elif dist.has_metadata('PKG-INFO'): metadata_name = 'PKG-INFO' metadata = dist.get_metadata(metadata_name) else: logger.warning("No metadata found in %s", display_path(dist.location)) metadata = '' if metadata is None: raise NoneMetadataError(dist, metadata_name) feed_parser = FeedParser() # The following line errors out if with a "NoneType" TypeError if # passed metadata=None. feed_parser.feed(metadata) return feed_parser.close() def get_requires_python(dist): # type: (pkg_resources.Distribution) -> Optional[str] """ Return the "Requires-Python" metadata for a distribution, or None if not present. """ pkg_info_dict = get_metadata(dist) requires_python = pkg_info_dict.get('Requires-Python') if requires_python is not None: # Convert to a str to satisfy the type checker, since requires_python # can be a Header object. requires_python = str(requires_python) return requires_python def get_installer(dist): # type: (Distribution) -> str if dist.has_metadata('INSTALLER'): for line in dist.get_metadata_lines('INSTALLER'): if line.strip(): return line.strip() return ''
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__init__.py | File | 0 B | 0644 |
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appdirs.py | File | 1.32 KB | 0644 |
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compat.py | File | 9.27 KB | 0644 |
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compatibility_tags.py | File | 5.31 KB | 0644 |
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datetime.py | File | 295 B | 0644 |
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deprecation.py | File | 3.24 KB | 0644 |
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direct_url_helpers.py | File | 4.26 KB | 0644 |
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distutils_args.py | File | 1.32 KB | 0644 |
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encoding.py | File | 1.25 KB | 0644 |
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entrypoints.py | File | 1.13 KB | 0644 |
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filesystem.py | File | 6.78 KB | 0644 |
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filetypes.py | File | 571 B | 0644 |
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glibc.py | File | 3.22 KB | 0644 |
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hashes.py | File | 4.57 KB | 0644 |
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inject_securetransport.py | File | 810 B | 0644 |
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logging.py | File | 12.79 KB | 0644 |
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misc.py | File | 27.34 KB | 0644 |
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models.py | File | 1.17 KB | 0644 |
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packaging.py | File | 2.96 KB | 0644 |
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parallel.py | File | 3.32 KB | 0644 |
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pkg_resources.py | File | 1.22 KB | 0644 |
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setuptools_build.py | File | 4.94 KB | 0644 |
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subprocess.py | File | 9.69 KB | 0644 |
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temp_dir.py | File | 8.18 KB | 0644 |
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typing.py | File | 1.37 KB | 0644 |
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unpacking.py | File | 9.27 KB | 0644 |
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urls.py | File | 1.49 KB | 0644 |
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virtualenv.py | File | 3.62 KB | 0644 |
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wheel.py | File | 7.13 KB | 0644 |
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