Colab and Kaggle loggers removeHandler

[glenn-jocher]

Resolve duplicate outputs in colab. Also optimizes Colab and Kaggle environment checks.

Signed-off-by: Glenn Jocher [email protected]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhancements to environment detection and logging setup in the Ultralytics YOLOv5 codebase.

📊 Key Changes

• Added is_ascii function to check if a string contains only ASCII characters.
• Improved is_colab function to detect Google Colab environment more reliably.
• Adjusted set_logging to handle Colab environment similarly to Kaggle.
• Moved is_docker function to a different location within the file for better code organization.
• Simplified is_kaggle function to remove assertions and use a more direct return statement.
• Removed redundant or relocated code including old is_ascii, is_docker, and is_colab definitions.

🎯 Purpose & Impact

• New is_ascii function might help in situations where non-ASCII characters could cause issues.
• is_colab function offers more precise detection, which could aid in configuring environments or troubleshooting.
• Changes in logging behavior for Colab and Kaggle ensure more consistent handling of logs across different platforms.
• Code cleanup and improved detection logic can simplify development and contribute to more maintainable code, potentially leading to fewer bugs.