python 笔记 分支和函数《笨办法学Python》习题35 ——1.17

习题 35:  分支和函数
知识点总结：

• 本次做的是利用循环、判定做的一个小游戏

•fromsys import exit     #向sys模块借一个exit函数用来退出程序

•exit(0)，                            
#正常退出

•start()             #start为线程入口，通过它启动线程       

•whileTrue:                        
#这是一种获得无限循环的常用方法，因为判断表达式的值本身就是True，while循环将无限进行下去。

 

 

 

ex35.py

#-*-coding: utf-8-*-
from sys import exit
#向sys模块借一个exit函数用来退出程序
 
#定义函数：gold_room，金房间
def gold_room():
print "This room is full of gold. How much do you take?"
next = raw_input("> ")
if "0" in next or "1" in next:
how_much = int(next)
else:
dead("Man, learn to type a number.")
if how_much < 50:
print "Nice, you're not greedy, you win!"
exit(0)
else:
dead("You greedy bastard!")
def bear_room():
#熊房间我想了很久，为什么要加布尔值
#进入熊房间后有几种选择：
#1.take honey ==》dead（死亡，退出）
#2.taunt bear ==》open door ==》(进入金币房)
#             ==》take honey==》dead（死亡，退出）
#             ==》其他（无效再次选择）
#3.其他       ==》其他（无效再次选择）
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:，如果为真则无限执行下去
while True:
next = raw_input("> ")
if next == "take honey":
dead("The bear looks at you then 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:
dead("The bear gets pissed off and chews your leg off.")
elif next == "open door" and bear_moved:
gold_room()
else:
print "I got no idea what that means."
 
def cthulhu_room():
print "Here you see the great evil Cthulhu."
print "He, it, whatever stares at you and yo
a4e0
u go insane."
print "Do you flee for your life or eat your head?"
next = raw_input("> ")
if "flee" in next:
start()
elif "head" in next:
dead("Well that was tasty!")
else:
cthulhu_room()
#定义终止，exit(0)表正常退出
def dead(why):
print why,"Good job!"
exit(0)
 
 
def start():
print "You are in a dark room."
print "There is a door to your right and left."
print "Which one do you take?"
next = raw_input("> ")
if next == "left":
bear_room()
elif next == "right":
cthulhu_room()
else:
dead("You stumble around the room until you starve.")
 
#start为线程入口，通过它启动线程
start()

运行结果:



思维导图（使用xmind绘画）：