Improved check_suffix() robustness to '' and ""

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Improved suffix checking logic in Ultralytics' utility functions.

📊 Key Changes

• Updated the check_suffix function to handle file suffix checks more robustly.
• Added a condition to ensure the suffix is non-empty before asserting it's in the allowed list.

🎯 Purpose & Impact

• Purpose: To prevent potential bugs where an empty file suffix could cause incorrect assertions.
• Impact: This change will lead to more accurate error messages and validation, ensuring users only process files with proper suffixes. For developers, the codebase becomes slightly more reliable and easier to maintain. 🛠️✅

[kennedyk1]

Hello! I had this problem on windows. I can't trainning my model without pre-trainned weights.

[glenn-jocher]

@kennedyk1 hi there! It seems like you're encountering issues with training your model without pre-trained weights on Windows. Have you tried specifying the pre-trained weights in the command using the --weights flag? Also, ensure that the path to the pre-trained weights is correct. Let me know if you need further assistance!