Merge branch 'master' into fix-nested-tuple-argument

jedi/inference/gradual/base.py

@@ -99,7 +99,7 @@ class DefineGenericBase(LazyValueWrapper):
         for generic_set in self.get_generics():
             values = NO_VALUES
             for generic in generic_set:
-                if isinstance(generic, (GenericClass, TypeVar)):
+                if isinstance(generic, (DefineGenericBase, TypeVar)):
                     result = generic.define_generics(type_var_dict)
                     values |= result
                     if result != ValueSet({generic}):

jedi/inference/gradual/typeshed.py

@@ -12,6 +12,8 @@ from jedi.inference.value import ModuleValue
 
 _jedi_path = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 TYPESHED_PATH = os.path.join(_jedi_path, 'third_party', 'typeshed')
+DJANGO_INIT_PATH = os.path.join(_jedi_path, 'third_party', 'django-stubs',
+                                'django-stubs', '__init__.pyi')
 
 _IMPORT_MAP = dict(
     _collections='collections',
@@ -173,6 +175,13 @@ def _try_to_load_stub(inference_state, import_names, python_value_set,
             )
             if m is not None:
                 return m
+        if import_names[0] == 'django':
+            return _try_to_load_stub_from_file(
+                inference_state,
+                python_value_set,
+                file_io=FileIO(DJANGO_INIT_PATH),
+                import_names=import_names,
+            )
 
     # 2. Try to load pyi files next to py files.
     for c in python_value_set:

jedi/inference/gradual/typing.py

@@ -226,9 +226,24 @@ class TypingClassValueWithIndex(_TypingClassMixin, TypingValueWithIndex):
 
         elif annotation_name == 'Callable':
             if len(annotation_generics) == 2:
-                return annotation_generics[1].infer_type_vars(
-                    value_set.execute_annotation(),
-                )
+                if is_class_value:
+                    # This only applies if we are comparing something like
+                    # List[Callable[..., T]] with Iterable[Callable[..., T]].
+                    # First, Jedi tries to match List/Iterable. After that we
+                    # will land here, because is_class_value will be True at
+                    # that point. Obviously we also compare below that both
+                    # sides are `Callable`.
+                    for element in value_set:
+                        element_name = element.py__name__()
+                        if element_name == 'Callable':
+                            merge_type_var_dicts(
+                                type_var_dict,
+                                merge_pairwise_generics(self, element),
+                            )
+                else:
+                    return annotation_generics[1].infer_type_vars(
+                        value_set.execute_annotation(),
+                    )
 
         elif annotation_name == 'Tuple':
             tuple_annotation = self.get_annotated_class_object()
@@ -421,6 +436,10 @@ class NewType(Value):
         self._type_value_set = type_value_set
         self.tree_node = tree_node
 
+    def py__class__(self):
+        c, = self._type_value_set.py__class__()
+        return c
+
     def py__call__(self, arguments):
         return self._type_value_set.execute_annotation()
 

jedi/inference/value/iterable.py

@@ -192,13 +192,17 @@ class Sequence(LazyAttributeOverwrite, IterableMixin):
     def _get_generics(self):
         return (self.merge_types_of_iterate().py__class__(),)
 
+    @inference_state_method_cache(default=())
+    def _cached_generics(self):
+        return self._get_generics()
+
     def _get_wrapped_value(self):
         from jedi.inference.gradual.base import GenericClass
         from jedi.inference.gradual.generics import TupleGenericManager
         klass = compiled.builtin_from_name(self.inference_state, self.array_type)
         c, = GenericClass(
             klass,
-            TupleGenericManager(self._get_generics())
+            TupleGenericManager(self._cached_generics())
         ).execute_annotation()
         return c
 

jedi/inference/value/klass.py

@@ -186,11 +186,12 @@ class ClassMixin(object):
                             mro.append(cls_new)
                             yield cls_new
 
-    def get_filters(self, origin_scope=None, is_instance=False):
-        metaclasses = self.get_metaclasses()
-        if metaclasses:
-            for f in self.get_metaclass_filters(metaclasses):
-                yield f
+    def get_filters(self, origin_scope=None, is_instance=False, include_metaclasses=True):
+        if include_metaclasses:
+            metaclasses = self.get_metaclasses()
+            if metaclasses:
+                for f in self.get_metaclass_filters(metaclasses):
+                    yield f
 
         for cls in self.py__mro__():
             if cls.is_compiled():