No worries, already implemented features happens so often in this list that there's a story about Guido going back in a time machine to implement them ;-)
Just wanted to check that I had understood what you suggested correctly On 9 April 2018 at 12:42, Andrés Delfino <adelf...@gmail.com> wrote: > Sorry, I didn't know that kwargs unpacking in dictionaries displays don't > raise a TypeError exception. > > On Mon, Apr 9, 2018 at 8:23 AM, Daniel Moisset <dmois...@machinalis.com> > wrote: > >> In which way would this be different to {**mapping1, **mapping2, >> **mapping3} ? >> >> On 8 April 2018 at 22:18, Andrés Delfino <adelf...@gmail.com> wrote: >> >>> Hi! >>> >>> I thought that maybe dict could accept several mappings as positional >>> arguments, like this: >>> >>> class Dict4(dict): >>>> def __init__(self, *args, **kwargs): >>>> if len(args) > 1: >>>> if not all([isinstance(arg, dict) for arg in args]): >>>> raise TypeError('Dict4 expected instances of dict since >>>> multiple positional arguments were passed') >>>> >>>> temp = args[0].copy() >>>> >>>> for arg in args[1:]: >>>> temp.update(arg) >>>> >>>> super().__init__(temp, **kwargs) >>>> else: >>>> super().__init__(*args, **kwargs) >>>> >>> >>> AFAIK, this wouldn't create compatibility problems, since you can't pass >>> two positional arguments now anyways. >>> >>> It would be useful to solve the "sum/union dicts" discussion, for >>> example: requests.get(url, params=dict(params, {'foo': bar}) >>> >>> Whar are your thoughts? >>> >>> _______________________________________________ >>> Python-ideas mailing list >>> Python-ideas@python.org >>> https://mail.python.org/mailman/listinfo/python-ideas >>> Code of Conduct: http://python.org/psf/codeofconduct/ >>> >>> >> >> >> -- >> Daniel F. Moisset - UK Country Manager - Machinalis Limited >> www.machinalis.co.uk <http://www.machinalis.com> >> Skype: @dmoisset T: + 44 7398 827139 >> >> 1 Fore St, London, EC2Y 9DT >> <https://maps.google.com/?q=1+Fore+St,+London,+EC2Y+9DT&entry=gmail&source=g> >> >> Machinalis Limited is a company registered in England and Wales. >> Registered number: 10574987. >> > > -- Daniel F. Moisset - UK Country Manager - Machinalis Limited www.machinalis.co.uk <http://www.machinalis.com> Skype: @dmoisset T: + 44 7398 827139 1 Fore St, London, EC2Y 9DT Machinalis Limited is a company registered in England and Wales. Registered number: 10574987.
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