Update imp to importlib for py3

docs/other/auto2to3.py

@@ -19,7 +19,11 @@
 import argparse
 import os
 import sys
-import imp
+# imp was deprecated in python 3.6
+if sys.version_info >= (3, 6):
+    import importlib as imp
+else:
+    import imp
 import runpy
 from io import StringIO
 from pkgutil import ImpImporter, ImpLoader

src/future/standard_library/__init__.py

@@ -62,6 +62,11 @@
 
 import sys
 import logging
+# imp was deprecated in python 3.6
+if sys.version_info >= (3, 6):
+    import importlib as imp
+else:
+    import imp
 import contextlib
 import copy
 import os
@@ -77,9 +82,6 @@
 
 from future.utils import PY2, PY3
 
-if PY2:
-    import imp
-
 # The modules that are defined under the same names on Py3 but with
 # different contents in a significant way (e.g. submodules) are:
 #   pickle (fast one)

src/past/builtins/misc.py

@@ -1,11 +1,13 @@
 from __future__ import unicode_literals
 
 import inspect
+import sys
 import math
 import numbers
 
 from future.utils import PY2, PY3, exec_
 
+
 if PY2:
     from collections import Mapping
 else:
@@ -103,13 +105,12 @@ def oct(number):
         return '0' + builtins.oct(number)[2:]
 
     raw_input = input
-
-    try:
+    # imp was deprecated in python 3.6
+    if sys.version_info >= (3, 6):
         from importlib import reload
-    except ImportError:
+    else:
         # for python2, python3 <= 3.4
         from imp import reload
-
     unicode = str
     unichr = chr
     xrange = range

src/past/translation/__init__.py

@@ -32,9 +32,14 @@
 Inspired by and based on ``uprefix`` by Vinay M. Sajip.
 """
 
+import sys
+# imp was deprecated in python 3.6
+if sys.version_info >= (3, 6):
+    import importlib as imp
+else:
+    import imp
 import logging
 import os
-import sys
 import copy
 from lib2to3.pgen2.parse import ParseError
 from lib2to3.refactor import RefactoringTool

tests/test_future/test_standard_library.py

@@ -447,11 +447,12 @@ def test_reload(self):
         """
         reload has been moved to the imp module
         """
-        try:
-            from importlib import reload
-        except ImportError:
-            from imp import reload
-        reload(sys)
+        # imp was deprecated in python 3.6
+        if sys.version_info >= (3, 6):
+            import importlib as imp
+        else:
+            import imp
+        imp.reload(sys)
         self.assertTrue(True)
 
     def test_install_aliases(self):