<div dir="ltr">In which way would this be different to {**mapping1, **mapping2, **mapping3} ?</div><div class="gmail_extra"><br><div class="gmail_quote">On 8 April 2018 at 22:18, Andrés Delfino <span dir="ltr"><<a href="mailto:adelfino@gmail.com" target="_blank">adelfino@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">
<div dir="ltr"><div><div><div>Hi!<br><br></div>I thought that maybe dict could accept several mappings as positional arguments, like this:<br></div><div><br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">class Dict4(dict):<br>    def __init__(self, *args, **kwargs):<br>        if len(args) > 1:<br>            if not all([isinstance(arg, dict) for arg in args]):<br>                raise TypeError('Dict4 expected instances of dict since multiple positional arguments were passed')<br><br>            temp = args[0].copy()<br><br>            for arg in args[1:]:<br>                temp.update(arg)<br><br>            super().__init__(temp, **kwargs)<br>        else:<br>            super().__init__(*args, **kwargs)<br></blockquote><br></div>AFAIK, this wouldn't create compatibility problems, since you can't pass two positional arguments now anyways.<br><br></div>It
 would be useful to solve the "sum/union dicts" discussion, for 
example: requests.get(url, params=dict(params, {'foo': bar})<br><br>
Whar are your thoughts?</div>

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