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Learn Python The Hard Way学习(35) - 分支和函数

2012-07-02

前面我们已经学习了if,函数,list等,现在我们来转变思路,看看你能理解下面的代码吗?[python]from sys import exitdef gold_room():print "This room is full of fold. How much do you take?...

前面我们已经学习了if,函数,list等,现在我们来转变思路,看看你能理解下面的代码吗?
[python]
from sys import exit


def gold_room():
print "This room is full of fold. 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 are not greedy, you win!"
exit(0)
else:
dead("you greedy bastard!")


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


while True:
next = raw_input("> ")
if next == "take honey":
dead("The bear looks at you then slaps our 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 == "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 you 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()


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()


运行结果
root@he-desktop:~/mystuff# python ex35.py
You are in a dark room.
There is a door to your right and left.
Which one do you take?
> right
Here you see the great evil Cthulhu.
He, it, whatever stares at you and you go insane.
Do you flee for your life or eat your head?
> ss
Here you see the great evil Cthulhu.
He, it, whatever stares at you and you go insane.
Do you flee for your life or eat your head?
> flee
You are in a dark room.
There is a door to your right and left.
Which one do you take?
> left
There is a bear here.
The bear has a bunch of honey.
The fat bear is in front if another door.
How are you going to move the bear?
> taunt bear
The bear has moved from the door. you can go through it now.
> taunt bear
I got no idea what that means.
> open door
This room is full of fold. How much do you take?
> 4
Man, learn to type a number. Good job!
root@he-desktop:~/mystuff# python ex35.py
You are in a dark room.
There is a door to your right and left.
Which one do you take?
> left
There is a bear here.
The bear has a bunch of honey.
The fat bear is in front if another door.
How are you going to move the bear?
> taunt bear
The bear has moved from the door. you can go through it now.
> open door
This room is full of fold. How much do you take?
> 1
Nice, you are not greedy, you win!

加分练习
1. 画一个游戏地图,看看你玩的流程。

2. 修改你的错误,包括拼写错误。

3. 为函数写评论,还记得doc文档吗?
在函数里面第一行注释,包含在"""中。

4. 扩展你的游戏,你能简洁的扩展它吗?

5. 在gold_room中有一个很不好的方法去判断你输入的是不是数字,你能有更好的方法改进吗?参考int()方法。
if nexe.isdigit():

作者:lixiang0522
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