> from inspect import stack, Signature > > def parameters(): > caller = stack()[2][0].f_globals[stack()[1][3]] > sig = Signature.from_callable(caller) > vars = stack()[1][0].f_locals > return sig.bind(**vars).arguments
This also doesn't work for me if a variable is assigned inside the function before parameters() is called. Although I know you weren't suggesting this was a final working version, it does at least illustrate that this isn't a trivial problem to solve. Whilst this is slightly different from my idea of having a function to set the class attributes based on the parameters to init, having something like parameters() would reduce this to a one-liner, and I'd definitely find it useful for passing to super, which has been mentioned already. Lewis On Tue, 5 May 2020, 16:18 Barry Scott, <ba...@barrys-emacs.org> wrote: > > > > On 5 May 2020, at 15:38, Steven D'Aprano <st...@pearwood.info> wrote: > > > > Here is a quick and dirty proof of concept: > > > > > > from inspect import stack, Signature > > > > def parameters(): > > caller = stack()[2][0].f_globals[stack()[1][3]] > > sig = Signature.from_callable(caller) > > vars = stack()[1][0].f_locals > > return sig.bind(**vars).arguments > > > > > > def func(spam, eggs): > > params = parameters() > > for name, value in params.items(): > > print(name, '=', value) > > > > > > Calling `func(2, 3)` prints: > > > > spam = 2 > > eggs = 3 > > Is this to avoid locals()? > > Do you have a version that works inside a func of a class? > > I tried the obvious and it TB'ed: > > > from inspect import stack, Signature > > def parameters(): > caller = stack()[2][0].f_globals[stack()[1][3]] > sig = Signature.from_callable(caller) > vars = stack()[1][0].f_locals > return sig.bind(**vars).arguments > > > class X: > > def func(self, spam, eggs): > params = parameters() > for name, value in params.items(): > print(name, '=', value) > > x = X() > x.func( 1, 2 ) > > Traceback (most recent call last): > File "args.py", line 25, in <module> > x.func( 1, 2 ) > File "args.py", line 20, in func > params = parameters() > File "args.py", line 11, in parameters > caller = stack()[2][0].f_globals[stack()[1][3]] > KeyError: 'func' > > > Barry > > > > > > > -- > > Steven > > _______________________________________________ > > 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/62ZDUVMEKQEMBRTVHM2GYXZVJLPPHYBQ/ > > Code of Conduct: http://python.org/psf/codeofconduct/ > > > _______________________________________________ > 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/7BVSYMV4Q7SOOEGC5UDLMWVZ6XT5RVUY/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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