如何返回到Python中以前的代码？

Question

我对编程相当陌生，但我有一个简短的问题。我想写一个“选择你自己的冒险”的游戏，但我遇到了一个问题。我只对代码中的if语句进行了深入的研究，但我希望能够在用户键入某些内容时将其发送回以前的代码

例如：

print "You are in a room with two doors to either side of you."
choiceOne = raw_input("Which way will you go?")
choiceOne = choiceOne.lower()
if choiceOne = "r" or choiceOne = "right":
     print "You go through the right door and find yourself at a dead end."
elif choiceOne = "l" or choiceOne = "left":
     print "You go through the left door and find yourself in a room with one more door."
else:
     print "Please choose left or right."

在if语句中，我想将用户发送回choiceOne的raw_input()。在elif语句中，我想给用户一个选择，要么从隔壁继续，要么返回第一个房间，看看另一扇门可能藏着什么秘密。有没有办法做到这一点？我不在乎这条路是否复杂，我只想让它运作起来

Answer 1

使用while循环：

while True:
    print "You are in a room with two doors to either side of you."
    choice_one = raw_input("Which way will you go?").lower()
    if choice_one == "r" or choice_one == "right":
         print "You go through the right door and find yourself at a dead end."
         continue # go back to choice_one 
    elif choice_one == "l" or choice_one == "left":
         print "You go through the left door and find yourself in a room with one more door."
         choice_two = raw_input("Enter 1 return the the first room or 2 to proceed to the next room")
         if choice_two == "1":
            # code go to first room
         else:
             # code go to next room
    else:
         print "Please choose left or right."

您需要使用==进行比较检查，=用于赋值

要中断循环，可以在循环外添加打印print "Enter e to quit the game"：

然后在代码中添加：

elif choice_one == "e":
        print "Goodbye"
        break

Answer 2

您正在寻找^{}循环吗

我认为这个网站解释得很好：http://www.tutorialspoint.com/python/python_while_loop.htm

count = 0
while (count < 9):
   print 'The count is:', count
   count = count + 1

print "Good bye!"

→

The count is: 0
The count is: 1
The count is: 2
The count is: 3
The count is: 4
The count is: 5
The count is: 6
The count is: 7
The count is: 8
Good bye!