I've missed this feature on occasion as well. +1 for whatever that counts; On Mon, 22 Mar 2021 at 17:30, Caleb Donovick <donov...@cs.stanford.edu> wrote:
> Never needed this for lists but definitely had the pain for kwargs. Seems > very reasonable for that use case, +0.5. > > In libraries I control I can make sure to use the same default values for > functions and their wrappers. > However when wrapping functions I don't control there is not a great way > to do this. And I end up > incrementally building up a kwargs dict. I suppose the same thing could > occur with *args lists so it makes sense for > both positional and keyword arguments. > > Yes one could do something like: > ``` > def fun(a, b=0): ... > def wraps_fun(args, b=inspect.signature(fun).parameters['b'].default): ... > ``` > But I would hardly call that clear. Further it is not robust as would > fail if `fun` is itself wrapped in way > that destroys its signature. E.g.: > ``` > def destroy_signature(f): > # should decorate here with functools.wraps(f) > def wrapper(*args, **kwargs): > return f(*args, **kwargs) > return wrapper > ``` > > Caleb > _______________________________________________ > Python-ideas mailing list -- python-ideas@python.org > To unsubscribe send an email to python-ideas-le...@python.org > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/python-ideas@python.org/message/2EHOQDIIK7BMAY54KG44Z45IYWDDSZSW/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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