Add missing slot to Updater
#4130
Merged
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Closes #4127 and https://t.me/pythontelegrambottalk/246581 and https://t.me/pythontelegrambotgroup/715736.
The reason why this happened is because:
Updateris inheriting fromtyping.AsyncContextManagerwhich defines a__dict__on < 3.13, and that's why there's no error.The tests don't catch that because they assume there will be no
__dict__leaving it to Python to catch the error for us (we previously used to check for__dict__presence)We still don't fully support Python 3.13, and support for that will be added in a later PR, or once it reaches beta.
Thus, the patch is untested.