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Asked: 2026-05-31T05:45:10+00:00

I saw the following code: def __init__(self, fn, **kw): [setattr(self,k,v) for (k,v) in kw.items()]

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I saw the following code:

def __init__(self, fn, **kw):
     [setattr(self,k,v) for (k,v) in kw.items()]
     ......

What does the input argument **kw mean?

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1 Answer

  1. Editorial Team

    kw is bound to a dict mapping keyword argument names to their values.

    Try calling

    def return_kwargs(**kw):
    return kw

    as return_kwargs(foo=1, bar="2", baz="hamspamspam").

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