Address review

Author: sobolevn

Doc/c-api/dict.rst

@@ -510,14 +510,18 @@ Dictionary objects
 .. c:function:: PyObject* PyDict_AsFrozenDictAndClear(PyObject *dict)
 
    Return a new :class:`frozendict` created
-   from the existing :c:type:`PyDictObject` instance.
+   from the existing :class:`dict` instance.
    Expects *dict* to be an exact :class:`dict` instance.
 
    Transfers all keys and values from *dict*
-   to the newly allocated :class:`!frozendict` with O(1) complexity.
+   to the newly allocated :class:`!frozendict`.
    Clears the input *dict* on success.
    Returns ``NULL`` with the exception set on error.
 
+   .. impl-detail::
+
+      Works with O(1) complexity.
+
    .. versionadded:: next
 
 

Lib/test/test_capi/test_dict.py

@@ -611,18 +611,18 @@ def test_dict_popstring(self):
 
     def test_dict_as_frozendict_and_clear(self):
         # Test PyDict_AsFrozenDictAndClear()
-        check = _testcapi.dict_as_frozendict_and_clear
+        as_frozendict = _testcapi.dict_as_frozendict_and_clear
         d = {1: 2, 'a': 'b'}
-        f = check(d)
+        f = as_frozendict(d)
         self.assertIs(type(f), frozendict)
         self.assertEqual(f, frozendict({1: 2, 'a': 'b'}))
         self.assertIs(type(d), dict)
         self.assertEqual(d, {})
 
         d = {}
-        f = check(d)
+        f = as_frozendict(d)
         self.assertIs(type(f), frozendict)
-        self.assertEqual(f, {})
+        self.assertEqual(f, frozendict())
         self.assertIs(type(d), dict)
         self.assertEqual(d, {})
         # CRASHES check([])