diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/dataclasses.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/dataclasses.py b/Lib/dataclasses.py index 05d62b6..efd8346 100644 --- a/Lib/dataclasses.py +++ b/Lib/dataclasses.py @@ -429,6 +429,10 @@ def _create_fn(name, args, body, *, globals=None, locals=None, # Compute the text of the entire function. txt = f' def {name}({args}){return_annotation}:\n{body}' + # Free variables in exec are resolved in the global namespace. + # The global namespace we have is user-provided, so we can't modify it for + # our purposes. So we put the things we need into locals and introduce a + # scope to allow the function we're creating to close over them. local_vars = ', '.join(locals.keys()) txt = f"def __create_fn__({local_vars}):\n{txt}\n return {name}" ns = {} |