Python Incremental Backup implementation tips

After learning about the Python programming language, you will find that it is very easy to use in some specific environments, it can also help developers to meet functional requirements in these environments. Here we will take a look at the operations related to Python Incremental backup.

Python Incremental Backup code example:

 
 

  
  
#! /Usr/bin/python
  
  
#-*-Coding: UTF-8 -*-
  
  
# Filename: auto_bak.py
  
  
# Author: zz
  
  
Import OS
  
  
Import sys
  
  
Def get_dir (path ):
  
  
Print path, '\ N'
  
  
Return OS. listdir (path)
  
  
Def bak_file (path, path_bak ):
  
  
List = OS. listdir (path)
  
  
For l in list:
  
  
File_path = OS. path. join (path, l)
  
  
File_path_bak = OS. path. join (path_bak, l)
  
  
Print file_path
  
  
# If the file path is a directory
  
  
If OS. path. isdir (file_path ):
  
  
# Create a folder if it does not exist in the Backup Directory
  
  
If not OS. path. isdir (file_path_bak ):
  
  
Create_com = ''' mkdir-p '% s ''''\
  
  
% (File_path_bak)
  
  
If OS. system (create_com) = 0:
  
  
Print create_com
  
  
Else:
  
  
Print 'create folder failure! '
  
  
OS. _ exit (0)
  
  
Bak_file (file_path, file_path_bak)
  
  
Else:
  
  
# If the file already exists, compare the file modification time
  
  
If OS. path. isfile (file_path_bak ):
  
  
Stat_bak = OS. stat (file_path_bak)
  
  
Stat_source = OS. stat (file_path)
  
  
# Determining the file modification time
  
  
If stat_source.st_mtime <= stat_bak.st_mtime:
  
  
Continue
  
  
Cp_com = '''cp' % s' % s ''''\
  
  
% (File_path, file_path_bak)
  
  
If OS. system (cp_com) = 0:
  
  
Print cp_com
  
  
Else:
  
  
Print 'create folder failure! '
  
  
OS. _ exit (0)
  
  
# File directory to be backed up
  
  
Path = '/home/zyf/appspot/auto_bak/'
  
  
# Backup file directory
  
  
Path_bak = '/home/zyf/appspot/auto_bak/Bak'
  
  
# Start backup
  
  
Bak_file (path, path_bak)
 
 

The above is an introduction to the operations related to Python Incremental backup.