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"""Utilities for checking python packages requirements."""
import importlib_metadata
from packaging.requirements import Requirement
from packaging.specifiers import SpecifierSet
from packaging.version import Version
class Reqs(dict[str, SpecifierSet]):
"""Utility class for working with package dependencies."""
reqs: dict[str, SpecifierSet]
def __init__(self, name: str = "ansible-lint") -> None:
"""Load linter metadata requirements."""
for req_str in importlib_metadata.metadata(name).json["requires_dist"]:
req = Requirement(req_str)
if req.name:
self[req.name] = req.specifier
def matches(self, req_name: str, req_version: str | Version) -> bool:
"""Verify if given version is matching current metadata dependencies."""
if req_name not in self:
return False
return all(
specifier.contains(str(req_version), prereleases=True)
for specifier in self[req_name]
)
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