bpo-32278: Add dataclasses.Data as an alias for typing.Any

Lib/dataclasses.py

@@ -3,8 +3,10 @@
 from copy import deepcopy
 import collections
 import inspect
+import typing
 
-__all__ = ['dataclass',
+__all__ = ('dataclass',
+           'Data',
            'field',
            'FrozenInstanceError',
            'InitVar',
@@ -15,7 +17,9 @@
            'astuple',
            'make_dataclass',
            'replace',
-           ]
+           )
+
+Data = typing.Any
 
 # Raised when an attempt is made to modify a frozen class.
 class FrozenInstanceError(AttributeError): pass

Lib/test/test_dataclasses.py

@@ -1,13 +1,13 @@
 from dataclasses import (
-    dataclass, field, FrozenInstanceError, fields, asdict, astuple,
+    dataclass, Data, field, FrozenInstanceError, fields, asdict, astuple,
     make_dataclass, replace, InitVar, Field
 )
 
 import pickle
 import inspect
 import unittest
 from unittest.mock import Mock
-from typing import ClassVar, Any, List, Union, Tuple, Dict, Generic, TypeVar
+from typing import ClassVar, List, Union, Tuple, Dict, Generic, TypeVar
 from collections import deque, OrderedDict, namedtuple
 
 # Just any custom exception we can catch.
@@ -200,7 +200,7 @@ def test_overwrite_fields_in_derived_class(self):
         #  the same as defined in Base.
         @dataclass
         class Base:
-            x: Any = 15.0
+            x: Data = 15.0
             y: int = 0
 
         @dataclass