*args and **kwargs basic usage of Python

*args represents any number of nameless parameters, which is a tuple

**kwargs: The dictionary passed in, such as: A=1, passed in the key value, the default is passed into **kwargs, such as the following code:

classFOO:def __init__(self):Pass    def __call__(self,*args,**Kwargs):Print "__call__"         forValueinchArgs#Show content directly            Print "Anther,args:", ValuePrintU"here's how to do the cumulative count"        PrintSum (args) +sum (Kwargs.values ())#do accumulateobj=FOO () obj (1,2,3,a=1)#args as a list of accommodated variables

Shown as:

You can see that in the A=1, the default is passed in to args, and it is passed into **kwargs, and 7 is the result of 1+2+3+1.

*args and **kwargs basic usage of Python