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FIX: Make vendored LooseVersion comparable to distutils.version.LooseVersion #3466

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Merged
merged 3 commits into from
May 11, 2022
Merged

FIX: Make vendored LooseVersion comparable to distutils.version.LooseVersion #3466

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bf67449
TEST: Check compatibility of vendored LooseVersion with distutils ver…
effigies May 11, 2022
aa99263
FIX: Make vendored LooseVersion comparable to distutils.version.Loose…
effigies May 11, 2022
f0fb21d
TEST: Catch warnings... apparently they double dip
effigies May 11, 2022
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35 changes: 35 additions & 0 deletions nipype/external/tests/test_version.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,35 @@
import warnings

import pytest

from nipype.external.version import LooseVersion as Vendored

with warnings.catch_warnings():
warnings.simplefilter("ignore")
try:
from distutils.version import LooseVersion as Original
except ImportError:
pytest.skip()


@pytest.mark.parametrize("v1, v2", [("0.0.0", "0.0.0"), ("0.0.0", "1.0.0")])
def test_LooseVersion_compat(v1, v2):
vend1, vend2 = Vendored(v1), Vendored(v2)
with warnings.catch_warnings():
warnings.simplefilter("ignore")
orig1, orig2 = Original(v1), Original(v2)

assert vend1 == orig1
assert orig1 == vend1
assert vend2 == orig2
assert orig2 == vend2
assert (vend1 == orig2) == (v1 == v2)
assert (vend1 < orig2) == (v1 < v2)
assert (vend1 > orig2) == (v1 > v2)
assert (vend1 <= orig2) == (v1 <= v2)
assert (vend1 >= orig2) == (v1 >= v2)
assert (orig1 == vend2) == (v1 == v2)
assert (orig1 < vend2) == (v1 < v2)
assert (orig1 > vend2) == (v1 > v2)
assert (orig1 <= vend2) == (v1 <= v2)
assert (orig1 >= vend2) == (v1 >= v2)
24 changes: 20 additions & 4 deletions nipype/external/version.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@
# 2022.04.27 - Minor changes are made to the comments,
# - The StrictVersion class was removed
# - Black styling was applied
# 2022.05.11 - Refactor LooseVersion._cmp to permit comparisons with
# distutils.version.LooseVersion
#

# distutils/version.py
Expand All @@ -38,6 +40,7 @@
of the same class, thus must follow the same rules)
"""

import sys
import re


Expand Down Expand Up @@ -211,14 +214,27 @@ def __repr__(self):
return "LooseVersion ('%s')" % str(self)

def _cmp(self, other):
if isinstance(other, str):
other = LooseVersion(other)
elif not isinstance(other, LooseVersion):
return NotImplemented
other = self._coerce(other)

if self.version == other.version:
return 0
if self.version < other.version:
return -1
if self.version > other.version:
return 1

@staticmethod
def _coerce(other):
if isinstance(other, LooseVersion):
return other
elif isinstance(other, str):
return LooseVersion(other)
elif "distutils" in sys.modules:
# Using this check to avoid importing distutils and suppressing the warning
try:
from distutils.version import LooseVersion as deprecated
except ImportError:
return NotImplemented
if isinstance(other, deprecated):
return LooseVersion(str(other))
return NotImplemented