Move annotation pep0484 file (about anontations) to gradual folder

jedi/evaluate/context/function.py

@@ -6,7 +6,6 @@ from jedi.evaluate.cache import evaluator_method_cache, CachedMetaClass
 from jedi.evaluate import compiled
 from jedi.evaluate import recursion
 from jedi.evaluate import docstrings
-from jedi.evaluate import pep0484
 from jedi.evaluate import flow_analysis
 from jedi.evaluate import helpers
 from jedi.evaluate.signature import TreeSignature
@@ -20,6 +19,7 @@ from jedi.evaluate.lazy_context import LazyKnownContexts, LazyKnownContext, \
 from jedi.evaluate.context import iterable
 from jedi import parser_utils
 from jedi.evaluate.parser_cache import get_yield_exprs
+from jedi.evaluate.gradual.annotation import infer_return_types
 
 
 class LambdaName(AbstractNameDefinition):
@@ -179,7 +179,7 @@ class FunctionExecutionContext(TreeContext):
             returns = get_yield_exprs(self.evaluator, funcdef)
         else:
             returns = funcdef.iter_return_stmts()
-            context_set = pep0484.infer_return_types(self)
+            context_set = infer_return_types(self)
             if context_set:
                 # If there are annotations, prefer them over anything else.
                 # This will make it faster.

jedi/evaluate/context/instance.py

@@ -273,7 +273,8 @@ class TreeInstance(AbstractInstanceContext):
     # to itself.
     @evaluator_method_cache(default=None)
     def _get_annotated_class_object(self):
-        from jedi.evaluate import pep0484
+        from jedi.evaluate.gradual.annotation import py__annotations__, \
+            infer_type_vars_for_execution
 
         for func in self._get_annotation_init_functions():
             # Just take the first result, it should always be one, because we
@@ -285,9 +286,9 @@ class TreeInstance(AbstractInstanceContext):
                 # need to infer anything.
                 continue
 
-            all_annotations = pep0484.py__annotations__(execution.tree_node)
+            all_annotations = py__annotations__(execution.tree_node)
             defined = self.class_context.define_generics(
-                pep0484.infer_type_vars_for_execution(execution, all_annotations),
+                infer_type_vars_for_execution(execution, all_annotations),
             )
             debug.dbg('Inferred instance context as %s', defined, color='BLUE')
             return defined

jedi/evaluate/context/klass.py

@@ -228,7 +228,7 @@ class ClassContext(use_metaclass(CachedMetaClass, ClassMixin, TreeContext)):
             if stars:
                 continue  # These are not relevant for this search.
 
-            from jedi.evaluate.pep0484 import find_unknown_type_vars
+            from jedi.evaluate.gradual.annotation import find_unknown_type_vars
             for type_var in find_unknown_type_vars(self.parent_context, node):
                 if type_var not in found:
                     # The order matters and it's therefore a list.