TST: switch to LooseVersion for dateutil version check

Author: AlexKirko

pandas/tests/indexes/datetimes/test_timezones.py

@@ -2,6 +2,7 @@
 Tests for DatetimeIndex timezone-related methods
 """
 from datetime import date, datetime, time, timedelta, tzinfo
+from distutils.version import LooseVersion
 
 import dateutil
 from dateutil.tz import gettz, tzlocal
@@ -585,6 +586,10 @@ def test_dti_construction_ambiguous_endpoint(self, tz):
                 "dateutil/US/Pacific",
                 "shift_backward",
                 "2019-03-10 01:00",
+                marks=pytest.mark.xfail(
+                    LooseVersion(dateutil.__version__) < LooseVersion("2.7.0"),
+                    reason="GH 31043",
+                ),
             ),
             ["US/Pacific", timedelta(hours=1), "2019-03-10 03:00"],
         ],

pandas/tests/scalar/timestamp/test_timestamp.py

@@ -2,6 +2,7 @@
 
 import calendar
 from datetime import datetime, timedelta
+from distutils.version import LooseVersion
 import locale
 import unicodedata
 
@@ -1094,6 +1095,10 @@ def test_constructor_ambigous_dst():
     assert result == expected
 
 
+@pytest.mark.xfail(
+    LooseVersion(dateutil.__version__) < LooseVersion("2.7.0"),
+    reason="dateutil moved to Timedelta.total_seconds() in 2.7.0",
+)
 @pytest.mark.parametrize("epoch", [1552211999999999872, 1552211999999999999])
 def test_constructor_before_dst_switch(epoch):
     # GH 31043