Completion: Don't suggest variables when only kwargs are legal, fixes #1541

jedi/api/helpers.py

@@ -15,7 +15,7 @@ from jedi.inference.base_value import NO_VALUES
 from jedi.inference.syntax_tree import infer_atom
 from jedi.inference.helpers import infer_call_of_leaf
 from jedi.inference.compiled import get_string_value_set
-from jedi.cache import signature_time_cache
+from jedi.cache import signature_time_cache, memoize_method
 from jedi.parser_utils import get_parent_scope
 
 
@@ -216,11 +216,15 @@ class CallDetails(object):
     def keyword_name_str(self):
         return _get_index_and_key(self._children, self._position)[1]
 
+    @memoize_method
+    def _list_arguments(self):
+        return list(_iter_arguments(self._children, self._position))
+
     def calculate_index(self, param_names):
         positional_count = 0
         used_names = set()
         star_count = -1
-        args = list(_iter_arguments(self._children, self._position))
+        args = self._list_arguments()
         if not args:
             if param_names:
                 return 0
@@ -267,6 +271,19 @@ class CallDetails(object):
                     return i
         return None
 
+    def iter_used_keyword_arguments(self):
+        for star_count, key_start, had_equal in list(self._list_arguments()):
+            if had_equal and key_start:
+                yield key_start
+
+    def count_positional_arguments(self):
+        count = 0
+        for star_count, key_start, had_equal in self._list_arguments()[:-1]:
+            if star_count:
+                break
+            count += 1
+        return count
+
 
 def _iter_arguments(nodes, position):
     def remove_after_pos(name):