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__init__.py
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base.py
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candidates.py
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factory.py
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found_candidates.py
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provider.py
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reporter.py
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requirements.py
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resolver.py
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Editing: base.py
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from pip._vendor.packaging.specifiers import SpecifierSet from pip._vendor.packaging.utils import canonicalize_name from pip._internal.req.req_install import InstallRequirement from pip._internal.utils.hashes import Hashes from pip._internal.utils.typing import MYPY_CHECK_RUNNING if MYPY_CHECK_RUNNING: from typing import FrozenSet, Iterable, Optional, Tuple from pip._vendor.packaging.version import _BaseVersion from pip._internal.models.link import Link CandidateLookup = Tuple[ Optional["Candidate"], Optional[InstallRequirement], ] def format_name(project, extras): # type: (str, FrozenSet[str]) -> str if not extras: return project canonical_extras = sorted(canonicalize_name(e) for e in extras) return "{}[{}]".format(project, ",".join(canonical_extras)) class Constraint(object): def __init__(self, specifier, hashes): # type: (SpecifierSet, Hashes) -> None self.specifier = specifier self.hashes = hashes @classmethod def empty(cls): # type: () -> Constraint return Constraint(SpecifierSet(), Hashes()) @classmethod def from_ireq(cls, ireq): # type: (InstallRequirement) -> Constraint return Constraint(ireq.specifier, ireq.hashes(trust_internet=False)) def __nonzero__(self): # type: () -> bool return bool(self.specifier) or bool(self.hashes) def __bool__(self): # type: () -> bool return self.__nonzero__() def __and__(self, other): # type: (InstallRequirement) -> Constraint if not isinstance(other, InstallRequirement): return NotImplemented specifier = self.specifier & other.specifier hashes = self.hashes & other.hashes(trust_internet=False) return Constraint(specifier, hashes) class Requirement(object): @property def name(self): # type: () -> str raise NotImplementedError("Subclass should override") def is_satisfied_by(self, candidate): # type: (Candidate) -> bool return False def get_candidate_lookup(self): # type: () -> CandidateLookup raise NotImplementedError("Subclass should override") def format_for_error(self): # type: () -> str raise NotImplementedError("Subclass should override") class Candidate(object): @property def name(self): # type: () -> str raise NotImplementedError("Override in subclass") @property def version(self): # type: () -> _BaseVersion raise NotImplementedError("Override in subclass") @property def is_installed(self): # type: () -> bool raise NotImplementedError("Override in subclass") @property def is_editable(self): # type: () -> bool raise NotImplementedError("Override in subclass") @property def source_link(self): # type: () -> Optional[Link] raise NotImplementedError("Override in subclass") def iter_dependencies(self, with_requires): # type: (bool) -> Iterable[Optional[Requirement]] raise NotImplementedError("Override in subclass") def get_install_requirement(self): # type: () -> Optional[InstallRequirement] raise NotImplementedError("Override in subclass") def format_for_error(self): # type: () -> str raise NotImplementedError("Subclass should override")