I've reproduced this on 3.11 (though the AttributeError is now on __enter__ and not __exit__ as was the case in msg135484):

>>> import transaction
>>> with transaction: pass
...
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: __enter__

>>> import sys
>>> sys.__exit__
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'sys' has no attribute '__exit__'
>>>