This module contains a checker for PyPI version consistency.
and_(s1: SpecifierSet, s2: SpecifierSet)
Do the and between two specifier sets.
is_satisfiable(specifier_set: SpecifierSet) -> bool
Check if the specifier set is satisfiable.
Satisfiable means that there exists a version number that satisfies all the constraints. It is worth noticing that it doesn't mean that that version number with that package actually exists.
from packaging.specifiers import SpecifierSet
The specifier set ">0.9, ==1.0" is satisfiable: the version number "1.0" satisfies the constraints
s1 = SpecifierSet(">0.9,==1.0") "1.0" in s1 True is_satisfiable(s1) True
The specifier set "==1.0, >1.1" is not satisfiable:
s1 = SpecifierSet("==1.0,>1.1") is_satisfiable(s1) False
For other details, please refer to PEP440:
specifier_set: the specifier set.
False if the constraints are surely non-satisfiable, True if we don't know.
is_simple_dep(dep: Dependency) -> bool
Check if it is a simple dependency.
Namely, if it has no field specified, or only the 'version' field set.
dep: the dependency
whether it is a simple dependency or not
to_set_specifier(dep: Dependency) -> SpecifierSet
Get the set specifier. It assumes to be a simple dependency (see above).
merge_dependencies(dep1: Dependencies, dep2: Dependencies) -> Dependencies
Merge two groups of dependencies.
If some of them are not "simple" (see above), we just filter them out.
dep1: the first operand
dep2: the second operand.
the merged dependencies.