Store filenames from a directory in an array

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Python is a programming language that lets you work quickly and integrate systems more effectively.

Sometimes you might need use a get a list of file names in an array without getting sub-diretory names. There are many ways to accomplish this task and I would like to discuss one of the ways we are using here at Walden Systems, because we believe this is the most straightforward method to get a list of files in a directory. We will be using os.path to do this.

Strategy to get a list of filenames : First, we need to iterate through the directory. Second, if it is a file, we add it to the array.

Here are actual code samples:

The first thing you need to do is import the os.path library with the following line :

     import os.path

Then you need to do is import the isdir and join with the following line :

     from os.path import isfile, join


Finally, you will add the filenames into an array only if it is a file not a directory :

     file_array = [ f for f in os.listdir( SOME_DIRECTORY_PATH ) if isfile( join( SOME_DIRECTORY_PATH, f ) ) ]

So, this is how a final code :

1 import os.path
2 from os.path import isfile, join
3 
4 file_array = [ f for f in os.listdir( SOME_DIRECTORY_PATH ) if isfile( join( SOME_DIRECTORY_PATH, f ) ) ]