非常基本的python

Question

得到错误,但我不知道为什么......(我正在学习)我的代码;

import random
input("Hit enter to roll the dice")
global answer
def rollDice():
    result = random.randrange(1,6)
    print ("It landed on.." + str(result))
    answer = input("would you like to play again? [y/n]")
rollDice();


if (answer == "y" or "Y"):
    rollDice();

错误; (一些剧本的作品)

Hit enter to roll the dice
It landed on..5
would you like to play again? [y/n]y
Traceback (most recent call last):
  File "diceRoller.py", line 11, in <module>
    while (answer == "y" or "Y"):
NameError: name 'answer' is not defined

Answer 1

除了答案所说的内容之外,我建议你不要使用global,而是我想return是否该人想继续或不继续,并继续基于此,例如:

import random
input("Hit enter to roll the dice")
def rollDice():
    result = random.randrange(1,6)
    print("It landed on.. " + str(result))
    answer = input("Would you like to play again? [y/n]")
    if answer in ("y", "Y"):
        return True
    return False

while rollDice():
    continue

另外,使用循环而不是if语句.否则,您将无法询问用户他/她是否想要无限期地继续.