Fix an array lookup issue. list.pop calls work now pretty well and return the right type.

jedi/evaluate/__init__.py

@@ -146,7 +146,7 @@ class Evaluator(object):
     @memoize_default(evaluator_is_first_arg=True)
     def eval_element(self, element):
         if isinstance(element, iterable.AlreadyEvaluated):
-            return element
+            return list(element)
         elif isinstance(element, iterable.MergedNodes):
             return iterable.unite(self.eval_element(e) for e in element)
 

jedi/evaluate/iterable.py

@@ -246,7 +246,8 @@ class Array(IterableWrapper):
     def names_dicts(self, search_global=False):  # Always False.
         # `array.type` is a string with the type, e.g. 'list'.
         scope = self._evaluator.find_types(compiled.builtin, self.type)[0]
-        scope = self._evaluator.execute(scope)[0]  # builtins only have one class
+        # builtins only have one class -> [0]
+        scope = self._evaluator.execute(scope, (AlreadyEvaluated((self,)),))[0]
         return scope.names_dicts(search_global)
 
     @common.safe_property

jedi/evaluate/param.py

@@ -44,7 +44,18 @@ class Arguments(pr.Base):
                     yield 0, child
 
     def get_parent_until(self, *args, **kwargs):
-        return self.trailer.get_parent_until(*args, **kwargs)
+        if self.trailer is None:
+            try:
+                element = self.argument_node[0]
+                from jedi.evaluate.iterable import AlreadyEvaluated
+                if isinstance(element, AlreadyEvaluated):
+                    element = self._evaluator.eval_element(element)[0]
+            except IndexError:
+                return None
+            else:
+                return element.get_parent_until(*args, **kwargs)
+        else:
+            return self.trailer.get_parent_until(*args, **kwargs)
 
     def as_tuple(self):
         for stars, argument in self._split():

test/completion/types.py

@@ -47,6 +47,17 @@ arr2.app
 #? int()
 arr.count(1)
 
+x = []
+#?
+x.pop()
+x = [3]
+#? int()
+x.pop()
+x = []
+x.append(1.0)
+#? float()
+x.pop()
+
 # -----------------
 # dicts
 # -----------------