Don't use deprecated distutils module. (#221)

* Don't use deprecated distutils module.

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: Bas Couwenberg <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

tests/__init__.py

@@ -1,8 +1,8 @@
 import importlib
 from contextlib import contextmanager
-from distutils import version
 
 import numpy as np
+import packaging.version
 import pandas as pd
 import pytest
 
@@ -42,7 +42,7 @@ def LooseVersion(vstring):
     # Our development version is something like '0.10.9+aac7bfc'
     # This function just ignored the git commit id.
     vstring = vstring.split("+")[0]
-    return version.LooseVersion(vstring)
+    return packaging.version.Version(vstring)
 
 
 has_dask, requires_dask = _importorskip("dask")