Python 2.7 如何在python中创建循环

就像我的另一个问题一样，这是关于我正在开发的采矿游戏，有一个bug，当我运行它时，它会这样做：

它关闭程序，而不是一次又一次地执行，我想创建一个循环，但我不知道如何为这类问题创建循环类型。请帮忙

代码如下：`

import random
start = raw_input("Welcome to the gold mine game! type 'start' to start playing ")
if str.upper(start) == ("START"):
  default_cash = 14
  print "you have %s cash" % default_cash
  choices = raw_input("What would you like to do? type 'dig' to dig for ores or type 'shop' to buy equitment ")
  if str.upper(choices) == ("DIG"):
    ores = ["nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "iron", "iron", "iron", "iron", "silver", "silver", "gold"]
    ores_random = random.choice(ores)
    print "you found %s!" % ores_random`

---

您可以添加一个while循环来保持程序运行，直到给出结束信号为止。比如：

 import random
 import sys      #to exit program at end by calling sys.exit function

 start = raw_input("Welcome to the gold mine game! type 'start' to start playing ")
 if str.upper(start) == ("START"):
   default_cash = 14
   print "you have %s cash" % default_cash
   choices = raw_input("What would you like to do? type 'dig' to dig for ores, type 'shop' to buy equitment, or type 'quit' to exit the game ") #gave extra instruction to user
   quit_signal = False  #added quit signal and initialized to false
   while not quit_signal:   #repeat until quit signal is true
      if str.upper(choices) == ("DIG"):
         ores = ["nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "iron", "iron", "iron", "iron", "silver", "silver", "gold"]
         ores_random = random.choice(ores)
         print "you found %s!" % ores_random
         choices = raw_input("What would you like to do? type 'dig' to dig for ores, type 'shop' to buy equitment, or type 'quit' to exit the game ")
      elif str.upper(choices) == ("SHOP"):
         #do something
         choices = raw_input("What would you like to do? type 'dig' to dig for ores, type 'shop' to buy equitment, or type 'quit' to exit the game ")
      elif str.upper(choices) == ("QUIT"):
        quit_signal = True  #set quit signal to true which will end while loop
   sys.exit(0)     #to show successful program termination

---

编辑：对不起。忘记重新请求选项输入。插入输入请求以在必要条件后在while循环中分配选项

您可以添加while循环以保持程序运行，直到给出结束信号。比如：

 import random
 import sys      #to exit program at end by calling sys.exit function

 start = raw_input("Welcome to the gold mine game! type 'start' to start playing ")
 if str.upper(start) == ("START"):
   default_cash = 14
   print "you have %s cash" % default_cash
   choices = raw_input("What would you like to do? type 'dig' to dig for ores, type 'shop' to buy equitment, or type 'quit' to exit the game ") #gave extra instruction to user
   quit_signal = False  #added quit signal and initialized to false
   while not quit_signal:   #repeat until quit signal is true
      if str.upper(choices) == ("DIG"):
         ores = ["nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "nothing", "iron", "iron", "iron", "iron", "silver", "silver", "gold"]
         ores_random = random.choice(ores)
         print "you found %s!" % ores_random
         choices = raw_input("What would you like to do? type 'dig' to dig for ores, type 'shop' to buy equitment, or type 'quit' to exit the game ")
      elif str.upper(choices) == ("SHOP"):
         #do something
         choices = raw_input("What would you like to do? type 'dig' to dig for ores, type 'shop' to buy equitment, or type 'quit' to exit the game ")
      elif str.upper(choices) == ("QUIT"):
        quit_signal = True  #set quit signal to true which will end while loop
   sys.exit(0)     #to show successful program termination

---

编辑：对不起。忘记重新请求选项输入。插入输入请求以在必要条件后在while循环中分配选项

快速搜索sentinel循环。它们基本上是while循环，变量为true或false，在循环结束时，您基本上会询问用户是否愿意再次执行循环，并为他们提供更改变量的选项以打破循环。编辑：看看特拉维斯的代码，这就是他正在做的。快速搜索哨兵循环。它们基本上是while循环，变量为true或false，在循环结束时，您基本上会询问用户是否愿意再次执行循环，并为他们提供更改变量的选项以打破循环。编辑：看travis的代码，这就是他正在做的。当我尝试时，它只会说“你找到了%s！”一次又一次地重复，我想说“你想做什么？键入“dig”来挖掘矿石，键入“shop”来购买设备，或者键入“quit”退出游戏”，然后重复整个游戏循环。编辑后，在回答的底部添加注释，当我尝试时，它只会说“你找到了%s！”一次又一次的重复，我想说“你想做什么？输入‘dig’来挖掘矿石，输入‘shop’来购买设备，或者输入‘quit’退出游戏”，然后重复整个游戏循环。编辑后，在答案底部添加注释