以下學習內容以python2為基準

11、提問print "How old are you?",

age = raw_input()

print "So, you're %r old." % age

python ex11.py

How old are you? 35

So, you're '35' old

input()與raw_input()都是Python的內建函數，實現與用戶的交互，但是功能不同。

raw_input可代表任意字符串

input在字符串上要加‘ ’

int類型最好使用input

12、提示別人

對于 raw_input 而言，你還可以讓它顯示出一個提示，從而告訴別人應該輸入什么東西。你可以在 () 之間放入一個你想要作為提示的字符串，如下所示：

y = raw_input("Name? ")

pydoc是python內置的官方文檔，類似于linux中的man

13、參數、解包、變量from sys import argv

script, first, second, third = argv

print "The script is called:", script

print "Your first variable is:", first

print "Your second variable is:", second

print "Your third variable is:", third

python ex13.py first 2nd 3rd

The script is called: ex13.py

Your first variable is: first

Your second variable is: 2nd

Your third variable is: 3rd

14、提示和傳遞from sys import argv

script, user_name = argv

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 = raw_input(prompt)

print "Where do you live %s?" % user_name

lives = raw_input(prompt)

print "What kind of computer do you have?"

computer = raw_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)

$ python ex14.py Zed

Hi Zed, I'm the ex14.py script.

I'd like to ask you a few questions.

Do you like me Zed?

> yes Where do you live Zed?

> America What kind of computer do you have?

> Tandy

Alright, so you said 'yes' about liking me.

You live in 'America'. Not sure where that is.

And you have a 'Tandy' computer. Nice.

15、讀取文件$ vi 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.

我們要做的是打開 ex15_sample.txtfrom sys import argv

script, filename = argv

txt = open(filename)

print "Here's your file %r:" % filename

print txt.read()

print "Type the filename agein:"

file_again = raw_input(">")

txt_again = open(file_again)

print txt_again.read()

16、讀寫文件from sys import argv

script, filename = argv

print "We're going to erase %r." %filename

print "If you don't want that, hit CRIL-C(^C)."

print "If you do want that, hit RETURN."

raw_input("?")

print "Opening the file..."

target = open(filename, 'w')

print "Truncating the file. Goodbye!"

target.truncate()

print "Now I'm going to ask you for three lines."

line1 = raw_input("line 1: ")

line2 = raw_input("line 2: ")

line3 = raw_input("line 3: ")

print "I'm going to write whese to the file."

target.write(line1)

target.write("\n")

target.write(line2)

target.write("\n")

target.write(line3)

target.write("\n")

print "And finally, we close it."

target.close()

17、更多文件操作

from os.path import exists

print "%r" % exists(to_file) #查看to_file有有沒用存在，會返回布爾值

print "d%" % len(indata) #查看有多少個字節

# 朝to_file里寫入數據，寫入indata

output = open(to_file, 'w')

output.write(indata)

output.close() #關閉

18、命令、變量、代碼、函數#coding:utf-8

def nan_nad_nv(nan_count,nv_count):

print "我們IT男生有%d。" % nan_count

print "我們IT女生有%d。" % nv_count

print "IT人員數目為："

>>> nan_nad_nv(60,20)

結果

IT人員數目為：

我們IT男生有60。

我們IT女生有20。

19、函數和變量def cheese_and_crackers(cheese_count, boxes_of_crackers):

print "You have %d cheeses!" % cheese_count

print "You have %d boxes of crackers!" % boxes_of_crackers

cheese_and_crackers(20, 30)

結果

You have 20 cheeses!

You have 30 boxes of crackers!

amount_of_cheese = 10

amount_of_crackers = 50

cheese_and_crackers(amount_of_cheese, amount_of_crackers)

結果

You have 10 cheeses!

You have 50 boxes of crackers!

20、函數和文件

掌握以下參數意義

f.seek(0)

f.readline()

原文地址：http://blog.51cto.com/8672771/2073551

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