[FIX] builtins removed from Python 3

* Reverse wrapper courtesy of @rco-odoo's original P3 branch
* thin compat module stripped down from werkzeug (to augment as needed)

issue 8530

1 files changed, 31 insertions, 0 deletions

diff --git a/odoo/tools/pycompat.py b/odoo/tools/pycompat.py
new file mode 100644
index 00000000000..114f7f2bd87
--- /dev/null
+++ b/odoo/tools/pycompat.py
@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+# to remove if we decide to add a dependency on six or future
+# very strongly inspired by https://github.com/pallets/werkzeug/blob/master/werkzeug/_compat.py
+import sys
+
+PY2 = sys.version_info[0]
+
+if PY2:
+    # pylint: disable=long-builtin,xrange-builtin
+    integer_types = (int, long)
+
+    range = xrange
+
+    # noinspection PyUnresolvedReferences
+    from itertools import imap, izip, ifilter
+
+    def implements_iterator(cls):
+        cls.next = cls.__next__
+        del cls.__next__
+        return cls
+else:
+    integer_types = (int,)
+
+    range = range
+
+    imap = map
+    izip = zip
+    ifilter = filter
+
+    def implements_iterator(cls):
+        return cls