为什么这给了我无限循环？

Question

我试图编写一个简单的程序:

import random

x = raw_input("How many rounds:")
rounds = 0

while rounds < x:
    # rock=0, paper=1, scissors=2
    computer1 = random.randint(0,2)
    computer2 = random.randint(0,2)

    if computer1 == computer2:
        print "draw"
    elif computer1 == 0 and computer2 == 1:
        print "lose"
    elif computer1 == 1 and computer2 == 2:
        print "lose"
    elif computer1 == 2 and computer2 == 0:
        print "lose"
    else:
        print "win"
    rounds = rounds + 1

为什么这会给我一个无限循环？当我取出输入行并将x替换为某个值(例如10)时,输出会给出10个结果.但为什么我不能用raw_input做呢？

Answer 1

raw_input 返回一个字符串,需要将其强制转换为 int

x = int(raw_input("How many rounds:"))

请注意,在python中:

>>> 159 < "8"
True
>>> 159 < 8
False
>>> 

为了更好地理解int- string比较,你可以看看这里.