bpo-34213: Allow dataclasses to work with a field named 'object'. (GH-8452)
diff --git a/Lib/dataclasses.py b/Lib/dataclasses.py
index e00a125..a43d076 100644
--- a/Lib/dataclasses.py
+++ b/Lib/dataclasses.py
@@ -4,6 +4,7 @@
import types
import inspect
import keyword
+import builtins
__all__ = ['dataclass',
'field',
@@ -343,6 +344,11 @@
# worries about external callers.
if locals is None:
locals = {}
+ # __builtins__ may be the "builtins" module or
+ # the value of its "__dict__",
+ # so make sure "__builtins__" is the module.
+ if globals is not None and '__builtins__' not in globals:
+ globals['__builtins__'] = builtins
return_annotation = ''
if return_type is not MISSING:
locals['_return_type'] = return_type
@@ -365,7 +371,7 @@
# self_name is what "self" is called in this function: don't
# hard-code "self", since that might be a field name.
if frozen:
- return f'object.__setattr__({self_name},{name!r},{value})'
+ return f'__builtins__.object.__setattr__({self_name},{name!r},{value})'
return f'{self_name}.{name}={value}'