Ultralytics Code Refactor https://ultralytics.com/actions (#13152)

Refactor code for speed and clarity

utils/downloads.py

@@ -92,7 +92,7 @@ def attempt_download(file, repo="ultralytics/yolov5", release="v7.0"):
     from utils.general import LOGGER
 
     def github_assets(repository, version="latest"):
-        # Return GitHub repo tag (i.e. 'v7.0') and assets (i.e. ['yolov5s.pt', 'yolov5m.pt', ...])
+        """Fetches GitHub repository release tag and asset names using the GitHub API."""
         if version != "latest":
             version = f"tags/{version}"  # i.e. tags/v7.0
         response = requests.get(f"https://api.github.com/repos/{repository}/releases/{version}").json()  # github api