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"""
Utility for version comparison
"""
class _Version:
def __init__(self, s):
parts = s.split(".")
version_parts = []
for p in parts:
try:
version_parts.append(int(p))
except ValueError:
version_parts.append(p)
self._version_parts = tuple(version_parts)
def __ge__(self, v):
this_parts = self._version_parts
other_parts = v._version_parts
while len(this_parts) < len(other_parts):
this_parts = this_parts + (0,)
return this_parts >= other_parts
def check_version(found_version, expected_min_or_eq_to_version):
"""check version string found_version >= expected_min_or_eq_to_version
If dev/prerelease tags result in TypeError for string-number comparison,
it is assumed that the dependency is satisfied.
Users on dev branches are responsible for keeping their own packages up to date.
"""
try:
return _Version(found_version) >= _Version(expected_min_or_eq_to_version)
except TypeError:
return True
if __name__ == "__main__":
assert check_version("1.2.3", "1.2.3")
assert check_version("1.2.4", "1.2.3")
assert check_version("1.2", "1.2.bar")
assert check_version("1.3", "1.2.bar")
assert check_version("1.3", "1.2b")
assert not check_version("1.2", "1.3")
assert not check_version("1.2.0", "1.2.1")
assert not check_version("1.2", "1.2.1")
print("Ok, checks passed")
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