Many pure python tools that have a special cases for dict should accept frozendict as well.

I'll fix the ones in collections. Some other priorities are pprint and ElementTree

Here's a rg dict | rg isinstance scan of the Lib directory:

unittest/mock.py:        if isinstance(self.in_dict, str):
trace.py:                             if isinstance(d, dict)]
rlcompleter.py:        if namespace and not isinstance(namespace, dict):
rlcompleter.py:                        isinstance(thisobject.__dict__.get(word),
tomllib/_parser.py:            if not isinstance(cont, dict):
tomllib/_parser.py:    if isinstance(value, (dict, list)):
tomllib/_parser.py:        if isinstance(value, (dict, list)):
tomllib/_parser.py:        if isinstance(float_value, (dict, list)):
multiprocessing/managers.py:                if not isinstance(method_to_typeid, dict):
functools.py:           (kwds is not None and not isinstance(kwds, dict)) or
functools.py:           (namespace is not None and not isinstance(namespace, dict))):
pprint.py:        if isinstance(object, self._dict_items_view):
turtle.py:        if isinstance(pen, dict):
optparse.py:                not isinstance(self.callback_kwargs, dict)):
optparse.py:        elif isinstance(other, dict):
linecache.py:    if module_globals is not None and not isinstance(module_globals, dict):
xml/etree/ElementTree.py:        if not isinstance(attrib, dict):
_pyrepl/input.py:        if isinstance(d, dict):
tkinter/__init__.py:    if isinstance(cnfs, dict):
tkinter/__init__.py:        if isinstance(cnf, (dict, tuple)):
_pyrepl/base_eventqueue.py:            if isinstance(k, dict):
test/_test_multiprocessing.py:    def test_dict_isinstance(self):
_pyrepl/readline.py:    if not isinstance(namespace, dict):
logging/config.py:        if not isinstance(value, ConvertingDict) and isinstance(value, dict):
logging/config.py:                    elif isinstance(qspec, dict):
logging/config.py:                        elif isinstance(lspec, dict):
logging/config.py:                            assert isinstance(d, dict)
test/test_pyrepl/test_terminfo.py:                        isinstance(ncurses_data[key], dict)
test/test_pyrepl/test_terminfo.py:                            isinstance(ncurses_data[key], dict)
test/test_launcher.py:        if isinstance(value, dict):
test/test_launcher.py:            tags = [t for t in company_data if isinstance(company_data[t], dict)]
test/test_launcher.py:            tags = [t for t in company_data if isinstance(company_data[t], dict)]
test/test_isinstance.py:        self.assertFalse(issubclass(dict, float|str))
test/test_marshal.py:    elif isinstance(obj, dict):
test/test_format.py:    if isinstance(args, dict):
test/test_build_details.py:                        self.assertFalse(isinstance(sys.implementation.version, dict))
_pydecimal.py:        elif not isinstance(traps, dict):
_pydecimal.py:        elif not isinstance(flags, dict):
_pydecimal.py:        if not isinstance(d, dict):
collections/__init__.py:        if not isinstance(other, dict):
collections/__init__.py:        if not isinstance(other, dict):
collections/__init__.py:        if isinstance(other, dict):
collections/__init__.py:        if isinstance(other, dict):
test/test_module/__init__.py:        self.assertTrue(isinstance(foo.__dict__, dict))
profiling/sampling/heatmap_collector.py:            if isinstance(data, dict):
test/test_code.py:                if isinstance(globalvars, dict):
test/test_urllib2_localnet.py:        assert isinstance(users, dict)
annotationlib.py:            or isinstance(self.__cell__, dict)
annotationlib.py:        if isinstance(self.__cell__, dict):
annotationlib.py:                if isinstance(self.__cell__, dict) and isinstance(other.__cell__, dict)
annotationlib.py:                if isinstance(self.__cell__, dict) else id(self.__cell__),
annotationlib.py:        if not isinstance(ann, dict):
annotationlib.py:    if not isinstance(ann, dict):
test/test_io/test_general.py:                if isinstance(v, dict):
test/test_compiler_assemble.py:            elif isinstance(value, dict):
json/encoder.py:                    elif isinstance(value, dict):
json/encoder.py:                    elif isinstance(value, dict):
json/encoder.py:        elif isinstance(o, dict):
plistlib.py:            if not isinstance(self.stack[-1], dict):
plistlib.py:        if self.current_key or not isinstance(self.stack[-1], dict):
plistlib.py:        elif isinstance(value, dict):
plistlib.py:        if isinstance(value, dict):
plistlib.py:        elif isinstance(value, dict):
test/test_tomllib/burntsushi.py:    elif isinstance(obj, dict):
test/test_tomllib/burntsushi.py:    if isinstance(obj, dict):
inspect.py:        if isinstance(dict_obj, (staticmethod, types.BuiltinMethodType)):
inspect.py:        elif isinstance(dict_obj, (classmethod, types.ClassMethodDescriptorType)):
inspect.py:        elif isinstance(dict_obj, property):
inspect.py:            if isinstance(slots, dict) and name in slots:
inspect.py:            (kwdefaults is None or isinstance(kwdefaults, dict)))
xmlrpc/client.py:        if isinstance(item, dict):
test/test_importlib/resources/zip.py:        if isinstance(contents, dict):
importlib/_bootstrap_external.py:    if not isinstance(module_globals, dict):
test/test_descrtut.py:    >>> isinstance([], dict)
enum.py:    if isinstance(obj, dict):
test/test_import/test_lazy_imports.py:            assert isinstance(sys.lazy_modules, dict), "sys.lazy_modules is not a dict"
test/test_type_annotations.py:                if not isinstance(self.my_annotations, dict):
test/test_type_annotations.py:                if not isinstance(value, dict):
dataclasses.py:    elif isinstance(obj, dict):
test/string_tests.py:        elif isinstance(obj, dict):
test/test_pyclbr.py:                if (not isinstance(classdict[name], ClassMethodType) or
compression/zstd/_zstdfile.py:        if options is not None and not isinstance(options, dict):
compression/zstd/__init__.py:    if not isinstance(dict_size, int):
compression/zstd/__init__.py:    if not isinstance(zstd_dict, ZstdDict):
compression/zstd/__init__.py:    if not isinstance(dict_size, int):

Linked PRs

• gh-145060
• gh-145125
• gh-145508
• gh-146295
• gh-146465
• gh-146466

Bắt đầu bằng việc xem xét collections/init.py và các vị trí được đề cập trong pprint.py và xml/etree/ElementTree.py, sau đó đọc các PR được liên kết để xác định những trường hợp nào vẫn còn bỏ ngỏ. So sánh các kiểm tra dict hiện có và các kiểm thử liên quan trong từng mô-đun bị ảnh hưởng; công việc được xem là hoàn tất khi các công cụ pure-Python còn lại đã được thống nhất xử lý frozendict một cách nhất quán mà không làm hồi quy hành vi của dict.