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proc
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root
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lib
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python2.7
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site-packages
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pip
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utils
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from __future__ import absolute_import from email.parser import FeedParser import logging import sys from pip._vendor.packaging import specifiers from pip._vendor.packaging import version from pip._vendor import pkg_resources from pip import exceptions logger = logging.getLogger(__name__) def check_requires_python(requires_python): """ Check if the python version in use match the `requires_python` specifier. Returns `True` if the version of python in use matches the requirement. Returns `False` if the version of python in use does not matches the requirement. Raises an InvalidSpecifier if `requires_python` have an invalid format. """ if requires_python is None: # The package provides no information return True requires_python_specifier = specifiers.SpecifierSet(requires_python) # We only use major.minor.micro python_version = version.parse('.'.join(map(str, sys.version_info[:3]))) return python_version in requires_python_specifier def get_metadata(dist): if (isinstance(dist, pkg_resources.DistInfoDistribution) and dist.has_metadata('METADATA')): return dist.get_metadata('METADATA') elif dist.has_metadata('PKG-INFO'): return dist.get_metadata('PKG-INFO') def check_dist_requires_python(dist): metadata = get_metadata(dist) feed_parser = FeedParser() feed_parser.feed(metadata) pkg_info_dict = feed_parser.close() requires_python = pkg_info_dict.get('Requires-Python') try: if not check_requires_python(requires_python): raise exceptions.UnsupportedPythonVersion( "%s requires Python '%s' but the running Python is %s" % ( dist.project_name, requires_python, '.'.join(map(str, sys.version_info[:3])),) ) except specifiers.InvalidSpecifier as e: logger.warning( "Package %s has an invalid Requires-Python entry %s - %s" % ( dist.project_name, requires_python, e)) return
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