Python 3 compatibility

pylib/gyp/simple_copy.py

 # Copyright 2014 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """A clone of the default copy.deepcopy that doesn't handle cyclic
 structures or complex types except for dicts and lists. This is
 because gyp copies so large structure that small copy overhead ends up
 taking seconds in a project the size of Chromium."""
 
 class Error(Exception):
@@ skipping 10 matching lines @@
     return _deepcopy_dispatch[type(x)](x)
   except KeyError:
     raise Error('Unsupported type %s for deepcopy. Use copy.deepcopy ' +
                 'or expand simple_copy support.' % type(x))
 
 _deepcopy_dispatch = d = {}
 
 def _deepcopy_atomic(x):
   return x
 
-for x in (type(None), int, long, float,
-          bool, str, unicode, type):
+try:
+  _string_types = (str, unicode)
+# There's no unicode in python3
+except NameError:
+  _string_types = (str, )
+
+try:
+  _integer_types = (int, long)
+# There's no long in python3
+except NameError:
+  _integer_types = (int, )
+
+for x in (type(None), float, bool, type) + _integer_types + _string_types:
   d[x] = _deepcopy_atomic
 
 def _deepcopy_list(x):
   return [deepcopy(a) for a in x]
 d[list] = _deepcopy_list
 
 def _deepcopy_dict(x):
   y = {}
-  for key, value in x.iteritems():
+  for key, value in x.items():
     y[deepcopy(key)] = deepcopy(value)
   return y
 d[dict] = _deepcopy_dict
 
 del d