Question

我正在学习Python，下面是一个python游戏函数，它包含一个while循环，但是这个循环是一个无限循环，我无法理解它是如何工作的以及它应该如何工作。

任何人都可以帮我解释一下while循环的含义，以及“bear_move = False”变量和循环条件“WHILE TRUE”之间的关系是什么。我在这里循环构造和条件时无法理解这一点，并且这个while循环条件与之相关。

def bear_room():
    print "There is a bear here."
    print "The bear has a bunch of honey."
    print "The fat bear is in front of another door."
    print "How are you going to move the bear?"
    bear_moved=False

    while True:            #What is this while loop means here
        next=raw_input("You should write take honey or taunt bear: >")

    if next=="take honey":
        print "The bear looks at you then pimp slaps your face off."
    elif next=="taunt bear" and not bear_moved:
        print "The bear has moved from the door. You can go through it now."
        bear_moved=True
    elif next=="taunt bear" and bear_moved:
        print "The bear gets pissed off and chews your crotch off."
    elif next=="open door" and bear_moved:
        gold_room()
    else:
        print "I got not I dea what that means."

Answer 1

你的if不在循环中，在python中，缩进很重要：

def bear_room():
    print "There is a bear here."
    print "The bear has a bunch of honey."
    print "The fat bear is in front of another door."
    print "How are you going to move the bear?"
    bear_moved=False

    while True:            #What is this while loop means here
        next=raw_input("You should write take honey or taunt bear: >")

    # here you have to move all your block to the 
    # right, so it would be inside the while loop

        if next=="take honey":
            print "The bear looks at you then pimp slaps your face off."
        elif next=="taunt bear" and not bear_moved:
            print "The bear has moved from the door. You can go through it now."
            bear_moved=True
        elif next=="taunt bear" and bear_moved:
            print "The bear gets pissed off and chews your crotch off."
        elif next=="open door" and bear_moved:
            gold_room()
        else:
            print "I got not I dea what that means."

基本上它是什么，它在无限循环中读取输入并根据此操作执行一些操作。您可以在循环中添加exit命令，以便随时退出：

        if next=="take honey":
            print "The bear looks at you then pimp slaps your face off."
        elif next=="taunt bear" and not bear_moved:
            print "The bear has moved from the door. You can go through it now."
            bear_moved=True
        elif next=="taunt bear" and bear_moved:
            print "The bear gets pissed off and chews your crotch off."
        elif next=="open door" and bear_moved:
            gold_room()
        elif next=="exit":
            break        # exit from cycle
        else:
            print "I got not I dea what that means."

Answer 2

  while True:            #What is this while loop means here

while True是一个无限循环。经常使用这些循环。如果您编写这样的循环，则必须检查每次迭代，游戏是否已达到手动停止的条件。您可以使用关键字break从内部停止循环。有关python

中控制流的更多详细信息，请参阅documentation

在您的代码中，您可能希望在这一点上休息一下：

elif next=="open door" and bear_moved:
    gold_room()
    break

因此，如果门打开并且熊已移动，则循环将结束。

为什么这个python while循环变得无限

2 个答案: