Question

您好我是python 2.7.3的新手，我试图在两个if语句之后编写自动退出子句。

import os

password = "Anhur"
attempt = 0
while (password != "Anhur") and (attempt <= 3):
    password = raw_input("Password: ")
    attempt = attempt + 1
    if attempt == 3:
        print ("You have used all your attempts, the system will now close..")
        print (" The shifting sands have ended you.")
        break

if (password == "Anhur"):
    print ("You conquered the sands")

os.exit(1)

这就是我所拥有的，但它似乎无法工作我也尝试过sys.exit（0）。任何帮助都会很精彩。

Answer 1

只需使用exit()

即可

import os

password=""
attempt=0
while (password != "Anhur") and (attempt<3):
    password=raw_input("Password: ")
    attempt+=1

    if (password == "Anhur"):
        print ("You conquered the sands")
        exit()

print ('''You have used all your attempts, the system will now close..")
The shifting sands have ended you.''')

Answer 2

嗨rsm，有用的答案。然而，初始代码是错误的，恕我直言无用。请尝试这个：

import os

password = ""
attempts = 0
found = False
while (attempts <= 2):
    password = raw_input("Password: ")
    attempts = attempts + 1
    if (password == "Anhur") :
        found = True
        break

if found:
    print ("You conquered the sands")
    exit(0)
else:
    print ("You have used all of your attempts, the system will now close..")
    print (" The shifting sands have ended you.")
    exit(1)

这允许在OS级别正确区分成功/失败，例如，在csh / tcsh中的变量状态（我工作时的默认shell）或更有用/现代shell中的其他方式。

为什么我不能让退出命令工作

2 个答案: