On Wed, Sep 01, 2021 at 05:27:40PM +1000, Steven D'Aprano wrote:
> Maybe I'm missing something, but I don't think that there is anyway to
> remove a warning from the warnings filter list so that it will be shown
> again.
>
> Example:
>
> >>> import warnings
> >>> warnings.warn("something happened")
> <stdin>:1: UserWarning: something happened
> >>> warnings.warn("something happened")
> >>>
>
> Once a warning has been displayed, it won't be displayed again until you
> exit the interpreter and start a new session. That's usually what we
> want, but sometimes I do want to re-display the warning.
>
> The warnings module has a function, reset_warnings, but it does too
> much, removing all the filters including those set at interpreter
> startup. I'd like a function to remove a single item, something like
> this:
>
> >>> warnings.warn("something happened")
> <stdin>:1: UserWarning: something happened
> >>> warnings.warn("something happened")
> >>>
> >>> warnings.forget(UserWarning("something happened"))
> >>> warnings.warn("something happened")
> <stdin>:1: UserWarning: something happened
>
> or similar.
>
> Thoughts?
Sounds like a missing feature.
Zbyszek
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