Fix annotations on self attributes, fixes #1681

jedi/inference/value/instance.py

@@ -501,6 +501,18 @@ class SelfName(TreeNameDefinition):
     def get_defining_qualified_value(self):
         return self._instance
 
+    def infer(self):
+        stmt = search_ancestor(self.tree_name, 'expr_stmt')
+        if stmt is not None:
+            if stmt.children[1].type == "annassign":
+                from jedi.inference.gradual.annotation import infer_annotation
+                values = infer_annotation(
+                    self.parent_context, stmt.children[1].children[1]
+                ).execute_annotation()
+                if values:
+                    return values
+        return super().infer()
+
 
 class LazyInstanceClassName(NameWrapper):
     def __init__(self, instance, class_member_name):

test/completion/pep0484_basic.py

@@ -179,3 +179,13 @@ def argskwargs(*args: int, **kwargs: float):
     next(iter(kwargs.keys()))
     #? float()
     kwargs['']
+
+
+class NotCalledClass:
+    def __init__(self, x):
+        self.x: int = x
+        self.y: int = ''
+        #? int()
+        self.x
+        #? int()
+        self.y