how to use a variable from one function 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

class Spam:
    def oneFunction(self,lists):
        category=random.choice(list(lists.keys()))
        self.word=random.choice(lists[category])

    def anotherFunction(self):
        for letter in self.word:              
        print("_",end=" ")