lo and behold - reversed is implemented - the force is strong with this one. fixes #24

jedi/evaluate/stdlib.py

@@ -2,11 +2,11 @@
 Implementations of standard library functions, because it's not possible to
 understand them with Jedi.
 """
-
 from jedi._compatibility import unicode
 from jedi.evaluate import compiled
 from jedi.evaluate import representation as er
 from jedi.evaluate import iterable
+from jedi.evaluate.helpers import FakeArray, FakeStatement
 from jedi.parser import representation as pr
 from jedi import debug
 
@@ -82,10 +82,26 @@ def builtins_super(evaluator, obj, params):
     return []
 
 
+def builtins_reversed(evaluator, obj, params):
+    objects = _follow_param(evaluator, params, 0)
+    if objects:
+        # unpack the iterator values
+        objects = iterable.get_iterator_types(objects)
+        rev = reversed(objects)
+        # Repack iterator values and then run it the normal way. This is necessary,
+        # because `reversed` is a function and autocompletion would fail in certain
+        # cases like `reversed(x).__iter__` if we just returned the result
+        # directly.
+        stmts = [FakeStatement([r]) for r in rev]
+        objects = (FakeArray(stmts, objects[0].parent),)
+    return [er.Instance(evaluator, obj, objects)]
+
+
 _implemented = {
     'builtins': {
         'getattr': builtins_getattr,
         'type': builtins_type,
         'super': builtins_super,
+        'reversed': builtins_reversed,
     }
 }