mirror of https://github.com/pypa/pip
48 lines
1.4 KiB
Python
48 lines
1.4 KiB
Python
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from pip._vendor.packaging.version import parse as parse_version
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class InstallationCandidate(object):
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"""Represents a potential "candidate" for installation.
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"""
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def __init__(self, project, version, location):
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self.project = project
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self.version = parse_version(version)
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self.location = location
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self._key = (self.project, self.version, self.location)
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def __repr__(self):
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return "<InstallationCandidate({!r}, {!r}, {!r})>".format(
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self.project, self.version, self.location,
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)
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# NOTE: pip._internal.index.Link does something similar.
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# We could have a "key-based-compare" mixin that these both use.
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def __hash__(self):
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return hash(self._key)
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def __lt__(self, other):
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return self._compare(other, lambda s, o: s < o)
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def __le__(self, other):
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return self._compare(other, lambda s, o: s <= o)
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def __eq__(self, other):
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return self._compare(other, lambda s, o: s == o)
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def __ge__(self, other):
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return self._compare(other, lambda s, o: s >= o)
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def __gt__(self, other):
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return self._compare(other, lambda s, o: s > o)
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def __ne__(self, other):
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return self._compare(other, lambda s, o: s != o)
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def _compare(self, other, method):
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if not isinstance(other, InstallationCandidate):
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return NotImplemented
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return method(self._key, other._key)
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