Code Refactor for Speed and Readability

[pderrenger]

This Ultralytics PR refactors code to improve performance and readability. 🔄

Key changes include:

🚀 Optimized various functions for faster execution.
🧩 Simplified complex logic for better understanding and maintenance.
🗑️ Removed redundant code to streamline operations.
📚 Improved code structure and organization.

These changes aim to enhance the overall quality and efficiency of the code. 🌟

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhanced code readability and maintenance by replacing old string formatting with f-strings.

📊 Key Changes

• Replaced os.makedirs path formatting:
  • Changed from concatenation to f-string.
• Updated wget commands:
  • Switched to f-string formatting for URLs.
• Unified string formatting:
  • Revised various string formatting sections to use f-strings.
• Loop refactoring:
  • Changed certain for loops to list comprehensions or using underscores _ to indicate unused variables.

🎯 Purpose & Impact

• Improved Readability:
  • F-strings make the code cleaner and easier to read. 🧹
• Enhanced Maintenance:
  • Using a consistent and modern style of string formatting reduces potential errors and simplifies future updates. 🔧
• Standardized Loops:
  • Simplified loop structures make the code more intuitive and concise. 🚀