Debugging is the process of identifying and fixing errors in Python code, essential for both development and production environments. Python offers built-in debugging tools like pdb and the breakpoint() function, while Visual Studio Code provides a powerful graphical debugger with features like breakpoints, watch expressions, and call stack inspection. Understanding debugging techniques—from simple print statements to advanced post-mortem analysis—enables developers to efficiently troubleshoot issues, profile performance, and ensure code quality. The key mental model: debugging is an iterative investigation where you form hypotheses, test them with breakpoints and inspection, and refine your understanding until the bug is isolated and fixed.

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