So cute are you python 5

Learn python step by step

1.show how to using an objcet

#!/usr/bin/python

#coding:utf-8

#FileName: referance.py

# function: show how to using an objcet

print 'Simple Assignment'

shoplist = ['apple','mango','carrot','banana']

mylist = shoplist # same object

del shoplist[ 0]

print 'shoplist is',shoplist

print 'mylist is',mylist

print 'Copy by making a full slice'

mylist =shoplist[:]

del mylist[ 0]

print 'shoplist is',shoplist

print 'mylist is',mylist
*


2.How to using string with python

#!/usr/bin/python

#coding:utf-8

#FileName: str_methods.py

# function:How to using string with python

name = 'Swaroop'#This is a string object

if name.startswith('Swa'):

    print 'Yes,the string starta with "Swa"'

if 'a' in name:

    print 'Yes,it contains the string "a"'

if name.find('war')!=- 1:

    print 'Yes,it contains the string "war"'

delimiter = '_*_'

mylist = ['Brazil','Russia','India','China']

print delimiter.join(mylist)

*

3.To show an backup function

#!/usr/bin/python

#coding:utf-8

#FileName: backup_ver1.py

# function:To show an backup function

import os

import time

#1.The files and directories to be backed up are specified in a list

source = ['~/work/python/b/reference.py','~/work/python/b/str_methods.py']

#If you using windows ,use source =['D:/work/cc','C:/wrk/dd']

#2.The backup must be stored in a main backup directory

target_dir ='~/work/python/b/backup/'

#3.The files are backed up into a zip file.

#4.The name of the zip archive is the current date and time

target = target_dir + time.strftime('%Y%m%d%H%M%S')+'.zip'

#5.We use the zip command (in linux/unix) to backup

zip_command = "zip -qr '%s' %s " %(target,' '.join(source))

#Run backup

if os.system(zip_command)== 0:

    print 'Successful backup to',target

else:

    print 'Backup FAILED'
*
4.To show an backup function again

#!/usr/bin/python

#coding:utf-8

#FileName: backup_ver2.py

# function:To show an backup function

import os

import time

#1.The files and directories to be backed up are specified in a list

source = ['~/work/python/b/reference.py','~/work/python/b/str_methods.py']

#If you using windows ,use source =['D:/work/cc','C:/wrk/dd']

#2.The backup must be stored in a main backup directory

target_dir ='~/work/python/b/backup/'

#3.The files are backed up into a zip file.

today =target_dir+time.strftime('%Y%m%d')

#4.The name of the zip archive is the current date and time

now = time.strftime('%H%M%S')

#Create the subdirectory if it isn't already there

if not os.path.exists(today):

    os.mkdir(today) #make directory

    print 'Successfully created directory',today

#The name of the zip file

tartget =today+os.sep+now+'.zip'

#5.We use the zip command to zip files

zip_command ="zip -qr '%s' %s" %(target,' '.join(source))

#Run the backup

if os.system(zip_command)== 0:

    print 'Succssful backup to',target

else:

    print 'Backup FAILED!!!'