How can we pass optional or keyword parameters from one function to another in Python?

Gather the arguments using the * and ** specifiers in the function’s parameter list. 

This gives us positional arguments as a tuple and the keyword arguments as a dictionary. 

Then we can pass these arguments while calling another function by using * and **:

def fun1(a, *tup, **keywordArg):

...

keywordArg['width']='23.3c'

...

Fun2(a, *tup, **keywordArg)