想说明一些，因为这本书针对的是python2.x版本，而我一开始安装的就是python3.x版本，所以有部分代码无法运行，感谢网络上很多帮助和答案~
exercise 11 提问
作业代码：
print ("How old are you?"),
age = input()
print ("How tall are you ?",)
height = input()
print ("How much do you weigh?",)
weight = input() #在python 3.x中不再区分input()和raw_input()
print ("So, you're %r old, %r tall and %r heavy." % ( age, height, weight))
print ("So, you're %s old, %s tall and %s heavy." % ( age, height, weight))
运行结果：
How old are you?
22
How tall are you ?
160
How much do you weigh?
53
So, you're '22' old, '160' tall and '53' heavy.
So, you're 22 old, 160 tall and 53 heavy.
1.从最后两行输出的结果可知%s与%r输出结果的不同。
2. 在python 3.x中已经取消了raw_input()的说法，可以不需要再进行区分。
exercise12 提示别人
作业代码：
age = input ("How old are you ?")
height = input ("How tall are you ?")
weight = input ("How much do you weigh?")
print ("So, you're %s old, %s tall and %s heavy." % ( age, height, weight))
运行结果：
How old are you ?22
How tall are you ?160
How much do you weigh?53
So, you're 22 old, 160 tall and 53 heavy.
exercise13 参数、解包、变量
作业代码：
from sys import argv # 从sys模块/模组/库中导入argv函数（参数变量）
script, first, second, third = argv #unpack 解包 将每个参数赋予一个变量名
print (" The script is called:" , script)
print (" Your first variable is :", first)
print (" Your second variable is :", second)
print (" Your third variable is:", third)
#运行时需要输入 python ex13.py 1 2 3 （可以替换为任意三样东西，script默认输出为文件名）
运行结果：
The script is called: ex13.py
Your first variable is : a
Your second variable is : b
Your third variable is: c
在运行中遇到了一些bug，主要需要知道argv的含义。另外，第一行script默认就输出的是文件名，是否可以有所不同？
加分习题2：再写两个脚本，其中一个接受更少的参数，另一个接受更多的参数，在参数解包时给它们取一些有意义的变量名。
尝试（在线追星）
代码：
from sys import argv
script , leader, dancer, rapper, vocal = argv
print (" Winner :" , script)
print (" the best leader:", leader)
print (" 百变精灵:", dancer)
print (" 宋画伯:",rapper)
print (" 小漂亮:",vocal)
运行结果：
Winner : ex13.1.py
the best leader: YOON
百变精灵: HOON
宋画伯: MINO
小漂亮: JINU
加分习题3 将 raw_input 和 argv 一起使用，让你的脚本从用户手上得到更多的输入。
1.在尝试中将四个变量都用input()表示出来，在输入变量结果后报错，原因仍然是没有足够的值进行解包，目前未解决该问题，以后再改吧~
2.argv 和 input() 有什么不同？
不同点在于用户输入的时机。如果参数是在用户执行命令时就要输入，那就是 argv，如果是在
脚本运行过程中需要用户输入，那就使用input()。
from sys import argv
script, leader, dancer, rapper, vocal = argv
leader = input ("who is the leader in Winner?:",)
dancer = input ("who is the dancer?:",)
vocal = input ("who is the vocal?:",)
rapper = input ("who is the rapper?:",)
print (" Winner :" , script)
print (" the best leader:", leader)
print (" 百变精灵:", dancer)
print (" 宋画伯:",rapper)
print (" 小漂亮:",vocal)
ERROR：
Traceback (most recent call last):
File "1.py", line 9, in <module>
leader, dancer, rapper, vocal = argv
ValueError: not enough values to unpack (expected 4, got 1)
———————————————看完14课后的修改——————————————————————————
from sys import argv
script, team_name = argv
leader = input ("who is the leader in %s ?:" % team_name)
dancer = input ("who is the dancer in %s?:" % team_name)
vocal = input ("who is the vocal in %s?:" % team_name)
rapper = input ("who is the rapper in %s?:" % team_name)
print (" the best leader:", leader)
print (" 百变精灵:", dancer)
print (" 宋画伯:",rapper)
print (" 小漂亮:",vocal)
运行结果：
PS C:\Users\Brenda\Desktop\Python学习路径资料\exercise> python 2.py winner
who is the leader in winner ?:YOON
who is the dancer in winner?:HOON
who is the vocal in winner?:JINU
who is the rapper in winner?:MINO
the best leader: YOON
百变精灵: HOON
宋画伯: MINO
小漂亮: JINU
遇到的问题！在使用格式化字符串的时候，leader = input ("who is the leader in %s ?:" % team_name)，在提示语和%team_name之间不能有逗号comma断开。
exercise14 提示和传递
作业代码：
from sys import argv
script, user_name = argv
prompt = '> ' #将用户提示符统一设置为prompt
print ("Hi %s, I'm the %s script." % ( user_name, script))
print ("I'd like to ask you a few questions.")
print ("Do you like me %s?" %user_name)
likes = input (prompt)
print ("Where do you live %s?" %user_name)
lives = input(prompt)
print ("What kind of computer do you have?")
computer = input(prompt)
print ("""
Alright, so you said %r about liking me.
You live in %r. Not sure where that is.
And you have a %r computer. Nice.
""" % (likes, lives , computer))
运行结果：
PS C:\Users\Brenda\Desktop\Python学习路径资料\exercise> python 1.py lin
Hi lin, I'm the 1.py script.
I'd like to ask you a few questions.
Do you like me lin?
> yes
Where do you live lin?
> BJ
What kind of computer do you have?
> thinkpad
Alright, so you said 'yes' about liking me.
You live in 'BJ'. Not sure where that is.
And you have a 'thinkpad' computer. Nice.
ex14让我弄懂了ex13的加分题~
exercise15 读取文件
作业代码：
#第一种方式(argv)
from sys import argv
script, filename = argv
txt = open ( filename )
print ("Here's your file %r :" %filename )
print (txt.read())
#第二种方式(input)
print ("Type the filename again:")
file_again = input (">")
txt_again = open (file_again)
print (txt_again.read())
运行结果：
PS C:\Users\Brenda\Desktop\Python学习路径资料\exercise> python 1.py ex15_sample.txt
Here's your file 'ex15_sample.txt' :
This is stuff I typed into a file.
It is really cool stuff.
Lots and lots of fun to have in here.
Type the filename again:
>ex15_sample.txt
This is stuff I typed into a file.
It is really cool stuff.
Lots and lots of fun to have in here.
主要需要熟悉argv（arguement variable）以及input（）的使用方法。
