Fix an issue with magic methods on classes. Fixes #461.

jedi/evaluate/compiled/__init__.py

@@ -476,6 +476,7 @@ def _a_generator(foo):
 
 _SPECIAL_OBJECTS = {
     'FUNCTION_CLASS': type(load_module),
+    'METHOD_CLASS': type(CompiledObject.is_class),
     'MODULE_CLASS': type(os),
     'GENERATOR_OBJECT': _a_generator(1.0),
     'BUILTINS': _builtins,

jedi/evaluate/representation.py

@@ -579,7 +579,7 @@ def names_dicts(self, search_global):
         if search_global:
             yield self.names_dict
         else:
-            scope = compiled.get_special_object(self._evaluator, 'FUNCTION_CLASS')
+            scope = self.py__class__()
             for names_dict in scope.names_dicts(False):
                 yield names_dict
 
@@ -605,7 +605,13 @@ def py__annotations__(self):
         return dct
 
     def py__class__(self):
-        return compiled.get_special_object(self._evaluator, 'FUNCTION_CLASS')
+        # This differentiation is only necessary for Python2. Python3 does not
+        # use a different method class.
+        if isinstance(self.base.get_parent_scope(), tree.Class):
+            name = 'METHOD_CLASS'
+        else:
+            name = 'FUNCTION_CLASS'
+        return compiled.get_special_object(self._evaluator, name)
 
     def __getattr__(self, name):
         return getattr(self.base_func, name)

test/test_evaluate/test_compiled.py

@@ -1,3 +1,5 @@
+from textwrap import dedent
+
 from jedi._compatibility import builtins, is_py3
 from jedi.parser import load_grammar
 from jedi.parser.tree import Function
@@ -67,3 +69,18 @@ def typ(string):
     else:
         assert typ('b""') == 'str'
         assert typ('u""') == 'unicode'
+
+
+def test_method_completion():
+    code = dedent('''
+    class Foo:
+        def bar(self):
+            pass
+
+    foo = Foo()
+    foo.bar.__func__''')
+    if is_py3:
+        result = []
+    else:
+        result = ['__func__']
+    assert [c.name for c in Script(code).completions()] == result