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GitHub Language Analyzer

A Python script that analyzes the programming languages used across a GitHub user's public repositories, with optional authentication, logging, and data visualization.

GitHub Language Chart Example Colorlog Support

📌 Features

  • Retrieves all public repositories of a GitHub user
  • Fetches language statistics for each repository
  • Aggregates total language usage
  • Displays a bar chart of language usage
  • Saves language data to a text file
  • Optional GitHub token support for higher API limits
  • Colored log output for better readability

🛠 Requirements

Install dependencies with:

pip install -r requirements.txt

🚀 Usage

1. Set GitHub Token (Optional)

To avoid API rate limits (60 requests/hr unauthenticated), export a personal GitHub token:

export GITHUB_TOKEN=your_token_here

If omitted, the script will prompt you to enter one or continue unauthenticated.

More info about PAT here!

2. Run the Script

python github_lang_analyzer.py

You will be prompted to enter the GitHub username to analyze.

📈 Output

  • A color-coded bar chart showing bytes of code per language.
  • A text file named {username}_languages.txt containing the language breakdown and total byte count.

Example output file:

Language usage for GitHub user: octocat
========================================
Python: 15000 bytes
JavaScript: 8000 bytes
HTML: 3000 bytes
========================================
Total bytes: 26000

🧠 Logging

The script uses colorlog to provide clean, colorized output for better visibility of info, warnings, and errors.

Example log:

[INFO] Fetching repositories for user 'octocat'...
[INFO] Found 7 repositories.
[INFO] Fetching languages for repo: hello-world...
[WARNING] GitHub token not found in environment variable 'GITHUB_TOKEN'.

❗ Troubleshooting

  • 404 errors: Ensure the username is correct and repositories are public.
  • Rate limiting: Use a GitHub token to increase the request limit.
  • No language data: Some repositories may be empty or not include detectable source files.