How can I pass nested list, tuple, set and dictionary in Python using *args and **kargs in function?

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Python3.6

def arithmetic_mean(first, *values):
""" This function calculates the arithmetic mean of a non-empty
arbitrary number of numerical values """

return (first + sum(values)) / (1 + len(values))

x= [('a', 232), ('b', 343), ('c', 543), ('d', 23)]
y= [[('a', 232), ('b', 343), ('c', 543), ('d', 23)]]

What I have tried:

can it be possible by zip method or any other way possible?