diff --git a/jedi/evaluate/compiled/__init__.py b/jedi/evaluate/compiled/__init__.py
index 27148096..d1ad8293 100644
--- a/jedi/evaluate/compiled/__init__.py
+++ b/jedi/evaluate/compiled/__init__.py
@@ -205,7 +205,12 @@ class CompiledObject(Context):
         )
 
     def get_safe_value(self, default=_sentinel):
-        return self.access.get_safe_value(default=default)
+        try:
+            return self.access.get_safe_value()
+        except ValueError:
+            if default == _sentinel:
+                raise
+            return default
 
     def execute_operation(self, other, operator):
         return _create_from_access(
@@ -565,8 +570,6 @@ def _create(evaluator, access, parent_context=None, faked=None):
         parent_context = create(evaluator, _builtins)
         return create(evaluator, access, parent_context)
 
-    if access._obj == str:
-        print('OOOOOOOOOO', id(access), id(parent_context), id(faked))
     return CompiledObject(evaluator, access, parent_context, faked)
 
 
diff --git a/jedi/evaluate/compiled/access.py b/jedi/evaluate/compiled/access.py
index 98ca26ea..7f22d562 100644
--- a/jedi/evaluate/compiled/access.py
+++ b/jedi/evaluate/compiled/access.py
@@ -83,7 +83,7 @@ def compiled_objects_cache(attribute_name):
         Caching the id has the advantage that an object doesn't need to be
         hashable.
         """
-        def wrapper(evaluator, obj):
+        def wrapper(evaluator, obj, parent_context=None):
             cache = getattr(evaluator, attribute_name)
             # Do a very cheap form of caching here.
             key = id(obj)
@@ -91,9 +91,13 @@ def compiled_objects_cache(attribute_name):
                 cache[key]
                 return cache[key][0]
             except KeyError:
-                result = func(evaluator, obj)
+                # TODO wuaaaarrghhhhhhhh
+                if attribute_name == 'mixed_cache':
+                    result = func(evaluator, obj, parent_context)
+                else:
+                    result = func(evaluator, obj)
                 # Need to cache all of them, otherwise the id could be overwritten.
-                cache[key] = result, obj
+                cache[key] = result, obj, parent_context
                 return result
         return wrapper
 
@@ -214,11 +218,10 @@ class DirectObjectAccess(object):
                 raise
             return None
 
-    def get_safe_value(self, default=_sentinel):
+    def get_safe_value(self):
         if type(self._obj) in (float, int, str, unicode, slice, type(Ellipsis)):
             return self._obj
-        if default == _sentinel:
-            raise ValueError
+        raise ValueError
 
     def get_api_type(self):
         obj = self._obj
diff --git a/jedi/evaluate/compiled/mixed.py b/jedi/evaluate/compiled/mixed.py
index 9d793f9d..a5230008 100644
--- a/jedi/evaluate/compiled/mixed.py
+++ b/jedi/evaluate/compiled/mixed.py
@@ -109,7 +109,8 @@ def _load_module(evaluator, path, python_object):
     ).get_root_node()
     python_module = inspect.getmodule(python_object)
 
-    evaluator.modules[python_module.__name__] = module
+    # TODO we should actually make something like this possible.
+    #evaluator.modules[python_module.__name__] = module
     return module
 
 
diff --git a/jedi/evaluate/context/iterable.py b/jedi/evaluate/context/iterable.py
index 02c6ea76..760e9b80 100644
--- a/jedi/evaluate/context/iterable.py
+++ b/jedi/evaluate/context/iterable.py
@@ -250,7 +250,7 @@ class DictComprehension(ArrayMixin, Comprehension):
         for keys, values in self._iterate():
             for k in keys:
                 if isinstance(k, compiled.CompiledObject):
-                    if k.obj == index:
+                    if k.get_safe_value(default=object()) == index:
                         return values
         return self.dict_values()
 
diff --git a/jedi/evaluate/stdlib.py b/jedi/evaluate/stdlib.py
index 76a58177..1296c168 100644
--- a/jedi/evaluate/stdlib.py
+++ b/jedi/evaluate/stdlib.py
@@ -229,7 +229,6 @@ def builtins_isinstance(evaluator, objects, types, arguments):
 
         for cls_or_tup in types:
             if cls_or_tup.is_class():
-                print(id(mro[0]), mro[0], id(cls_or_tup), cls_or_tup)
                 bool_results.add(cls_or_tup in mro)
             elif cls_or_tup.name.string_name == 'tuple' \
                     and cls_or_tup.get_root_context() == evaluator.BUILTINS:
diff --git a/test/test_evaluate/test_compiled.py b/test/test_evaluate/test_compiled.py
index bf193652..5191c7fc 100644
--- a/test/test_evaluate/test_compiled.py
+++ b/test/test_evaluate/test_compiled.py
@@ -12,32 +12,25 @@ from jedi.parser_utils import clean_scope_docstring
 from jedi import Script
 
 
-def _evaluator():
-    return Evaluator(parso.load_grammar(), Project())
-
-
-def test_simple():
-    e = _evaluator()
-    bltn = compiled.CompiledObject(e, builtins)
-    obj = compiled.CompiledObject(e, '_str_', bltn)
+def test_simple(evaluator):
+    obj = compiled.create(evaluator, '_str_')
     upper, = obj.py__getattribute__('upper')
     objs = list(upper.execute_evaluated())
     assert len(objs) == 1
     assert isinstance(objs[0], instance.CompiledInstance)
 
 
-def test_fake_loading():
-    e = _evaluator()
-    assert isinstance(compiled.create(e, next), FunctionContext)
+def test_fake_loading(evaluator):
+    assert isinstance(compiled.create(evaluator, next), FunctionContext)
 
-    builtin = compiled.get_special_object(e, 'BUILTINS')
+    builtin = compiled.get_special_object(evaluator, 'BUILTINS')
     string, = builtin.py__getattribute__('str')
-    from_name = compiled._create_from_name(e, builtin, string, '__init__')
+    from_name = compiled._create_from_name(evaluator, builtin, string, '__init__')
     assert isinstance(from_name, FunctionContext)
 
 
-def test_fake_docstr():
-    node = compiled.create(_evaluator(), next).tree_node
+def test_fake_docstr(evaluator):
+    node = compiled.create(evaluator, next).tree_node
     assert clean_scope_docstring(node) == next.__doc__