Fix failing 2.7 test due to deprecated pathlib

Author: maresb

packages/python/plotly/plotly/io/_kaleido.py

@@ -1,15 +1,16 @@
 from __future__ import absolute_import
 from six import string_types
 import os
+import sys
 
 
 import json
 import plotly
 from plotly.io._utils import validate_coerce_fig_to_dict
 
-try:
+if sys.version_info >= (3, 4):
     from pathlib import Path, PurePath
-except ImportError:
+else:
     # For Python < 3.4 use pathlib2
     from pathlib2 import Path, PurePath
 

packages/python/plotly/plotly/tests/test_optional/test_kaleido/test_kaleido.py

@@ -4,9 +4,9 @@
 from contextlib import contextmanager
 from io import BytesIO
 
-try:
+if sys.version_info >= (3, 4):
     from pathlib import Path
-except ImportError:
+else:
     # For Python < 3.4 use pathlib2
     from pathlib2 import Path