Python get file suffix name and batch update file suffix name instance in directory

Get file suffix name

The code is as follows	Copy Code
#!/usr/bin/python Import OS Dict = {} For D, FD, FL in Os.walk ('/home/ahda/program/'): For F in FL: Sufix = Os.path.splitext (f) [1][1:] If Dict.has_key (Sufix): Dict[sufix] + + 1 Else Dict[sufix] = 1 For item in Dict.items (): Print '%s:%s '% item

The key here is Os.path.splitext ()
This is a different place from the upstairs. such as Abc/ef.g.h
The suffix from upstairs will be g.h.
And mine is H.

Instance

Python lookup traverses a file with the specified suffix name under the specified file path

The code is as follows	Copy Code
Import OS Import Sys Import Os.path For Dirpath, Dirnames, filenames in Os.walk (Startdir): For filename in filenames: If Os.path.splitext (filename) [1] = = ' txt ': filepath = Os.path.join (dirpath, filename) #print ("File:" + filepath) Input_file = open (filepath) Text = Input_file.read () Input_file.close () output_file = open (filepath, ' W ') Output_file.write (text) Output_file.close ()

Instance

#批量重命名目录中的文件后缀

The code is as follows

Copy Code

Import OS Def swap_extensions (dir, before, after): If before[:1]!= '. ': #如果参数中的后缀名没有 '. ' Then add Before = '. ' + Before Thelen =-len (before) If after[:1]!= '. ': after = '. ' + For path, subdir, the files in Os.walk (dir): For oldfile in Files: If Oldfile[thelen:] = = before: Oldfile = Os.path.join (path, oldfile) NewFile = Oldfile[:thelen] + after Os.rename (Oldfile, NewFile) Print Oldfile + ' changed to ' + NewFile if __name__ = = ' __main__ ': Import Sys If Len (SYS.ARGV)!= 4: print ' Usage:swap_extension.py RootDir before after ' Sys.exit (1) Swap_extensions (Sys.argv[1], sys.argv[2], sys.argv[3])

Example: Rename the file at the end of Php e:/py/test to. py

E:py>python_cook e:/py/test. php. py

E:/py/testtest.php changed to e:/py/testtest.py

E:/py/test1.php changed to e:/py/test1.py

E:/py/test2.php changed to e:/py/test2.py