Fix: __getitem__ sometimes didnt evaluate all the types.

test/completion/arrays.py

@@ -41,11 +41,11 @@ b[int():]
 
 
 class _StrangeSlice():
-    def __getitem__(self, slice):
-        return slice
+    def __getitem__(self, sliced):
+        return sliced
 
 # Should not result in an error, just because the slice itself is returned.
-#? []
+#? slice()
 _StrangeSlice()[1:2]