how to get a variable from one function and use in another python code example

Example 1: how to use variable from another function in python

s = Spam()
s.oneFunction(lists)
s.anotherFunction()

Example 2: how to use variable from another function in python

>>> def oneFunction(lists):
        category=random.choice(list(lists.keys()))
        return random.choice(lists[category])


>>> def anotherFunction():
        for letter in oneFunction(lists):              
        print("_",end=" ")