py3: make check-py3-compat.py import importlib only if necessary
importlib isn't available on Python 2.6, and it isn't necessary for Py2
checks.
--- a/contrib/check-py3-compat.py Sun Oct 09 08:09:20 2016 -0700
+++ b/contrib/check-py3-compat.py Sun Oct 09 17:02:34 2016 +0200
@@ -10,7 +10,6 @@
from __future__ import absolute_import, print_function
import ast
-import importlib
import os
import sys
import traceback
@@ -41,6 +40,7 @@
def check_compat_py3(f):
"""Check Python 3 compatibility of a file with Python 3."""
+ import importlib # not available on Python 2.6
with open(f, 'rb') as fh:
content = fh.read()