How to Compare Two GitHub Repositories and Highlight Differences in Python

import requests
import json
from pathlib import Path

def fetch_repo_data(owner, repo_name):
    """Fetch repository metadata from GitHub API."""
    url = f"https://api.github.com/repos/{owner}/{repo_name}"
    response = requests.get(url)
    response.raise_for_status()
    return response.json()

def compare_repos(repo1_data, repo2_data):
    """Compare repository data and return differences."""
    diff = {}
    keys = ('stargazers_count', 'forks_count', 'open_issues_count', 
            'language', 'description', 'size')
    for key in keys:
        val1, val2 = repo1_data.get(key), repo2_data.get(key)
        if val1 != val2:
            diff[key] = {'repo1': val1, 'repo2': val2}
    # Compare license
    lic1 = repo1_data.get('license')
    lic2 = repo2_data.get('license')
    if lic1 != lic2:
        diff['license'] = {'repo1': lic1['spdx_id'] if lic1 else None,
                          'repo2': lic2['spdx_id'] if lic2 else None}
    return diff

def main():
    try:
        repo1 = fetch_repo_data("psf", "requests")
        repo2 = fetch_repo_data("requests", "requests")
        differences = compare_repos(repo1, repo2)
        if differences:
            print("Differences found:")
            print(json.dumps(differences, indent=2))
        else:
            print("No differences")
    except requests.exceptions.RequestException as e:
        print(f"Error fetching repository data: {e}")

if __name__ == "__main__":
    main()