如何修改Python代码实现用户输入y后脚本从开头重新执行

你当前的代码重复编写了3次相同的主业务逻辑，直接调整结构即可实现需求，改动如下：

调整逻辑 #

• 删除重复的2份功能代码，仅保留1份核心的系统启动、功能选择交互逻辑
• 在所有代码最外层套一层无限循环，包裹全部业务逻辑
• 修改末尾的交互判断：
  • 当用户输入y时执行continue，直接触发外层循环重新运行，即可从头执行整个脚本
  • 当用户输入其他内容时执行break，退出整个脚本

修改后完整代码 #

import time

# 外层无限循环，控制脚本重启逻辑
while True:
    print("Booting System (Alfa V1.2, Bugs Fixed, Loop added)")
    time.sleep(1)
    print("Hello, and welcome to Training OS")
    time.sleep(2)
    print("What would you like to do ?")
    time.sleep(1)
    txt = raw_input("1.File Explorer  2.System Info.  ( 1 or 2 )")
    if txt=="1": 
        print("Loading File Explorer") 
        time.sleep(1)
        print("  _____    _____ \n /     |  /     | \n |     |  |     | \n |_____|  |_____| \n  File1    File2  ")
        time.sleep(0.5)
        file = raw_input("1.File1 2.File2 ( 1 or 2 )")
        if file=="1":
            print("\n\nFile1:"
                  "\n_______________________________________"
                  "\nTOP SECRET UPDATE INFO:"
                  "\n           Update Name . . . . 1.2"
                  "\nEstimated Release Date . . . . 25.09.21"
                  "\n(Official release date:. . . . 24.09.21)"
                  "\n          New Features . . . . Loop"
                  "\n_______________________________________")
        else:
            print("\n\nFile2:"
                  "\n----------------------------------------"
                  "\n                                        "
                  "\n              Error 404.                "
                  "\n             File Missing               "
                  "\n                                        "
                  "\n----------------------------------------")
    else:
        print("\n\nSystem Info:"
              "\n--------------------------------------------------------------------------------------"
              "\n\nOs version: . . . . . 1.1 (New features: File Explorer)"
              "\n   Founded: . . . . . 22.09.2021, Baku, Azerbaijan"
              "\n  Products: . . . . . TOS"
              "\n\n***This OS is still being developed so some features are currently unaviable :(***"
              "\n--------------------------------------------------------------------------------------")

    # 末尾交互判断
    cmd = raw_input('\nAnything else? Enter \'y\' to continue, other keys to exit: ')
    if cmd != 'y':
        break

注：如果你使用的是Python3版本，只需把代码中所有的raw_input替换为input即可正常运行。

内容的提问来源于stack exchange，提问作者Manuel Pozzoni