Standardize license headers in Python files

[pderrenger]

This PR updates all Python file headers to use a standardized license format. 🔄

Changes:

• 📝 Standardized header: # Ultralytics 🚀 AGPL-3.0 License - https://ultralytics.com/license
• 🧹 Ensures consistent spacing after headers
• 🔍 Applies to all Python files except those in venv

Learn more about Ultralytics licensing 📚

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

This PR updates license references across multiple files to include an explicit link to the Ultralytics license page for better transparency and accessibility.

📊 Key Changes

• Replaced header comments in all files to specify the Ultralytics AGPL-3.0 license with a direct link (https://ultralytics.com/license).
• Updated ClearML's about link to point to its new GitHub repository (https://github.com/clearml/clearml).

🎯 Purpose & Impact

• Improved Clarity: Ensures all code files clearly reference the software license and provide users with direct access to license details. 📄
• Transparency: Enhances legal compliance by making license information more explicit, aiding both developers and end users. 🌐
• Better Documentation: Updates ClearML integration links to the correct repository for ease of use. 🚀

This has no functional impact on model behavior but reflects best practices and simplifies license attribution for users.

[UltralyticsAssistant]

👋 Hello @pderrenger, thank you for submitting a yolov3 🚀 PR! To ensure a smooth review and integration process, please take a moment to review the following checklist and helpful resources:

• ✅ Define a Purpose: Clearly explain the purpose and impact of your PR in its description. Link to any relevant issues if applicable. Make sure your commit messages are clear and conform to the project's conventions.
• ✅ Synchronize with Source: Ensure your PR is synchronized with the latest main branch of the yolov3 repository. If it is outdated, you can update it by clicking the 'Update branch' button or by running git pull and git merge locally.
• ✅ Pass CI Checks: All Ultralytics Continuous Integration (CI) checks should pass. Address any failing checks to proceed with the PR.
• ✅ Update Documentation: Verify that relevant parts of the documentation are updated to reflect changes introduced by your PR.
• ✅ Provide Tests: If applicable, include or modify tests to cover your changes. Confirm that all existing and new tests pass successfully.
• ✅ Sign the CLA: If this is your first contribution to Ultralytics, ensure that you've signed our Contributor License Agreement (CLA) by commenting the following on the PR: "I have read the CLA Document and I sign the CLA."
• ✅ Keep Changes Minimal: Limit the changes introduced in the PR to the minimum essential to implement the feature or fix the issue. Simplicity and clarity improve maintainability! 🛠️

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PR Details:

Your PR titled "Standardize license headers in Python files" focuses on updating Python source file headers to a standardized license format. 👍

Changes Introduced:

• Standardized header format: # Ultralytics 🚀 AGPL-3.0 License - https://ultralytics.com/license
• Consistent spacing after headers for better structure 💡
• Coverage applied to all Python files except those in the venv folder.

Impact:

This change improves legal clarity and ensures consistent file headers across the project, aligning with YOLOv3's licensing policies without affecting core functionality.

🛠️ Next Steps:
If applicable, please ensure that:

1. All CI checks pass on this PR.
2. There's no unintended modification to non-relevant files.
3. Proper attribution for contributions is included if other collaborators are involved.

For detailed contribution guidelines, refer to our Contributing Guide 📝.

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⚡ Please note, this is an automated response to guide you through the process. An Ultralytics engineer will review your pull request shortly and provide further feedback if necessary. If you have any questions or need assistance, feel free to leave a comment below. Thank you for helping improve Ultralytics YOLOv3! 🚀✨

[UltralyticsAssistant]

🎉 The PR is merged—thank you, @pderrenger, with contributions from @glenn-jocher, for your thoughtful work! Your efforts to enhance transparency and clarity in our license references and documentation are deeply valued. 🌟

As Marcus Aurelius once said, “What we do now echoes in eternity.” By prioritizing open communication and accessibility, you contribute to a foundation that inspires trust and empowers users. This update is a testament to the power of collaboration and attention to detail. 🚀

We’re excited about the positive impact this will have—cheers to making a difference! 🙌