Python Learning notes Glob module

Python has a number of class libraries, which are now documented for later review:

1.glob Module

For file name operations, matching files in the specified directory, there are two commonly used functions:

Glob (pattern), which returns a list of matching files.

Iglob (pattern), which returns the generator, can traverse the matching file.

Example code:

Glob ()
Bogon:datasets xuguoqiang$ lsmatrixA.txt matrixB.txt test words.txtfiles= Glob.glob ('*.txt')>>> forFileinchFiles: ...PrintFilematrixA.txtmatrixB.txtwords.txt>>>Printfiles['MatrixA.txt','MatrixB.txt','Words.txt']

 Iglob (): 
 >>> files = Glob.iglob ( " *.txt    )  >>>  files  <generator object Iglob at 0x1101d9dc0>>>> for  file in   files: ...  print   FilematrixA.txtmatrixB.txtwords.txt  

Specify the result of a relative path
Import Glob Print Glob.glob (r'... /*.txt') ['.. /test.txt']

You can see that if pattern is specified as a relative path or an absolute path, the returned file is also a relative or absolute path. Use according to actual needs.

In addition, using the OS Listdir can also get similar results:

Import os>>> dir = r'./'print  os.listdir (dir) [' MatrixA.txt ' ' MatrixB.txt ' ' Test ' ' Words.txt ']

The difference is that Listdir will list all the filenames, including the folder, which contains no path and needs to be matched and filtered by itself.

Python Learning notes Glob module