[简明python教程]学习笔记2014-04-29 23:41:40

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#python #数据结构与算法

本文详细介绍了使用Python进行模块创建、数据结构应用、文件操作、系统调用等基础编程技能，通过实例展示了如何利用Python实现模块化编程、列表与元组操作、文件读写、系统参数获取等功能。

学习内容：

1.学习了模块，包括制作自己的模块

2.学习了数据结构的列表、元组

[root@reed 0429]# for i in $(ls *.py);do echo "cat $i";cat $i;echo; done
cat mymodule_dem2.py
#!/usr/bin/python
from mymodule import sayhi,version,date
sayhi()
print version
print date
cat mymodule_dem.py
#!/usr/bin/python
import mymodule
mymodule.sayhi()
print 'version is',mymodule.version
print 'date is ',mymodule.date
cat mymodule.py
#!/usr/bin/python
def sayhi():
        print 'hello,this is my module speaking'
version='1.0'
date='20140429'
cat print_tuple.py
#!/usr/bin/python
age=27
name='reed'
print '%s is %d years old'%(name,age)
cat using_list.py
#!/usr/bin/python
shoplist=['apple','mango','carrot','banana']
print 'i have',len(shoplist),'items to purchase.'
print 'these items are:',
for item in shoplist:
        print item,
print '\ni alse have to buy rice.'
shoplist.append('rice')
print 'my shopping list is now',shoplist
print 'i will sort my list'
shoplist.sort()
print 'sorted shopping list is',shoplist
print 'the first item i will buy is',shoplist[0]
olditem=shoplist[0]
del shoplist[0]
print 'i bought the',olditem
print 'my shopping list is now',shoplist
cat using_name.py
#!/usr/bin/python
if __name__=='__main__':
        print 'this program is beging run by itself'
else:
        print 'i am being imported from another module'
cat using_sys.py
#!/usr/bin/python
import sys
print 'the command line arguments are:'
for i in sys.argv:
        print i
print '\n\nThe PYTHON PATH is',sys.path,'\n'
cat using_tuple.py
#!/usr/bin/python
zoo=('wolf','elephant','penguin')
print 'number of animals in the zoo is',len(zoo)
new_zoo=('monkey','dolphin',zoo)
print 'number of animals in the zoo is',len(new_zoo)
print 'all animals in new zoo are',new_zoo
print 'animals brought from old zoo are',new_zoo[2]
print 'animals brought from old zoo is',new_zoo[2][2]