How to Efficiently Filter Files in a Directory Using Python?

Filtering Files in a Directory Using Python

Obtaining a filtered list of files in a directory can be a cumbersome task, especially when dealing with large directories. To overcome this challenge, Python provides several methods, eliminating the need for complex for loops or the use of external commands like "ls."

Using the glob Module:

A powerful solution is to utilize the Python glob module. This module allows for flexible filtering of files based on their names using glob patterns. For example, to retrieve a list of files with the pattern "145592*.jpg":

<code class="python">import glob

jpgFilenamesList = glob.glob('145592*.jpg')</code>

This code generates a list of files that match the specified pattern. The asterisk (*) acts as a wildcard, matching any characters in the filename.

Using os.listdir() and Filtering:

Another approach is to combine os.listdir() with a filtering mechanism. os.listdir() returns a list of all files in a directory, and you can then filter out the desired files using conditional statements. However, this method can be less efficient for large directories.

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