added an own implementation for hasattr (python 2, python 3 is fine)

_compatibility.py

@@ -77,3 +77,14 @@ try:
     from cStringIO import StringIO as BytesIO
 except ImportError:
     from io import BytesIO
+
+# hasattr function used because python 
+if sys.hexversion >= 0x03000000:
+    hasattr = hasattr
+else:
+    def hasattr(obj, name):
+        try:
+            getattr(obj, name)
+            return True
+        except AttributeError:
+            return False

evaluate.py

@@ -20,7 +20,7 @@ TODO descriptors (also for classes, for instances it should work)
 TODO @staticmethod @classmethod (implement descriptors, builtins are done)
 TODO variable assignments in classes (see test/completion/classes @230) +1
 """
-from _compatibility import next, property
+from _compatibility import next, property, hasattr
 import sys
 
 import itertools