有人可以解释一下吗

Question

Friends please explain me:

Function name getAnswer with parameter answerNumber , but we have not assigned argument to function --- please explain how this program runs without error.

import random

def getAnswer(answerNumber):
    if answerNumber == 1:
        return 'It is certain'
    elif answerNumber == 2:
        return 'It is decidedly so'
    elif answerNumber == 3:
        return 'Yes'
    elif answerNumber == 4:
        return 'Reply hazy try again'
    elif answerNumber == 5:
        return 'Ask again later'
    elif answerNumber == 6:
        return 'Concentrate and ask again'
    elif answerNumber == 7:
        return 'My reply is no'
    elif answerNumber == 8:
        return 'Outlook not so good'
    elif answerNumber == 9:
        return 'Very doubtful'

r = random.randint(1, 9)
fortune = getAnswer(r)
print(fortune)

Answer 1

You do assign an argument.

You use your random.randint(1,9) code to generate a random number.

This is your argument as you are passing this into your function and checking it against the various sets of criteria within it.