def test_support_prerelease_version() -> None:
assert not Version("3.9.0").is_prerelease
v = Version("3.9.0a4")
assert v.is_prerelease
assert str(v) == "3.9.0a4"
assert v.complete() == v
assert v.bump() == Version("3.9.0a5")
assert v.bump(2) == Version("3.9.1")
def _normalize_op_specifier(op: str, version_str: str) -> Tuple[str, Version]:
version = Version(version_str)
if version.is_wildcard:
if op == "==":
op = "~="
version[-1] = 0
elif op == ">": # >X.Y.* => >=X.Y+1.0
op = ">="
version = version.bump(-2)
elif op in ("<", ">=", "<="):
# <X.Y.* => <X.Y.0
# >=X.Y.* => >=X.Y.0
# <=X.Y.* => <X.Y.0
version[-1] = 0
if op == "<=":
op = "<"
elif op != "!=":
raise InvalidPyVersion(f"Unsupported version specifier: {op}{version}")
if op != "~=" and not (op == "!=" and version.is_wildcard):
# Don't complete with .0 for ~=3.5 and !=3.4.*:
version = version.complete()
return op, version