Скачать или смотреть How to Retrieve Only the Folder Names Using Python's Glob Module

Discover how to efficiently extract only the folder names from a directory structure while using Python's glob module.
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This video is based on the question https://stackoverflow.com/q/77203702/ asked by the user 'Tony Montana' ( https://stackoverflow.com/u/6260154/ ) and on the answer https://stackoverflow.com/a/77203714/ provided by the user 'AKX' ( https://stackoverflow.com/u/51685/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Extracting Folder Names Using Python's Glob Module

Finding specific files in a directory structure often presents a unique challenge for developers and data analysts alike. Imagine you're tasked with identifying all the folders that contain .log files nested within a directory tree. While you can retrieve the complete paths easily, getting just the folder names requires a bit of finesse. In this post, we will guide you through the process of achieving this using Python's glob module.

Problem Statement

Using the following glob pattern code:

[[See Video to Reveal this Text or Code Snippet]]

This line of code successfully retrieves an iterator of complete paths to .log files in a directory and its subdirectories. However, if you want to extract only the folder names (such as ['a', 'b', 'c', 'c/cd'] from the given directory structure), you need an additional step.

Solution Overview

To accomplish the task of retrieving only the folder names, you can utilize the os.path module alongside the comprehension feature in Python. This method ensures that you do not receive duplicate folder names and can even return paths relative to the specified root.

Steps to Follow

Here’s a detailed breakdown of how you can get the list of folder names:

Step 1: Import Required Libraries

Make sure to import the necessary modules:

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Step 2: Use Glob to Find Log Files

Use the glob.iglob() function to iterate over all log files:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Extract Directory Names

You can retrieve folder names using os.path.dirname() in a set comprehension to avoid duplicates:

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Get Relative Directory Names

If you would like the directory names relative to the ROOT, use os.path.relpath():

[[See Video to Reveal this Text or Code Snippet]]

Example Code

Here’s the complete code snippet:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By following the above steps, you will successfully generate a list of folder names containing .log files without the clutter of full paths. This method is efficient and concise, allowing you to retain only the information necessary for your application.

Implementing this approach in your projects will not only simplify your code but also enhance readability and maintainability. Happy coding!