TST: use get_distribution to correct mypy error

Author: AlexKirko

pandas/tests/indexes/datetimes/test_timezones.py

@@ -7,6 +7,7 @@
 import dateutil
 from dateutil.tz import gettz, tzlocal
 import numpy as np
+from pkg_resources import get_distribution
 import pytest
 import pytz
 
@@ -587,7 +588,8 @@ def test_dti_construction_ambiguous_endpoint(self, tz):
                 "shift_backward",
                 "2019-03-10 01:00",
                 marks=pytest.mark.xfail(
-                    LooseVersion(dateutil.__version__) < LooseVersion("2.7.0"),
+                    LooseVersion(get_distribution("python-dateutil").version)
+                    < LooseVersion("2.7.0"),
                     reason="GH 31043",
                 ),
             ),

pandas/tests/scalar/timestamp/test_timestamp.py

@@ -9,6 +9,7 @@
 import dateutil
 from dateutil.tz import tzutc
 import numpy as np
+from pkg_resources import get_distribution
 import pytest
 import pytz
 from pytz import timezone, utc
@@ -1096,7 +1097,7 @@ def test_constructor_ambigous_dst():
 
 
 @pytest.mark.xfail(
-    LooseVersion(dateutil.__version__) < LooseVersion("2.7.0"),
+    LooseVersion(get_distribution("python-dateutil").version) < LooseVersion("2.7.0"),
     reason="dateutil moved to Timedelta.total_seconds() in 2.7.0",
 )
 @pytest.mark.parametrize("epoch", [1552211999999999872, 1552211999999999999])