Pdb
Pdb is the Python Debugger, a built-in interactive debugger for Python that allows developers to set breakpoints, step through code, inspect variables, and evaluate expressions to troubleshoot and fix bugs in Python programs. It provides a command-line interface for debugging scripts and applications, making it an essential tool for debugging Python code during development.
Developers should learn and use Pdb when debugging complex Python applications, as it helps identify logic errors, track variable states, and understand program flow in real-time. It is particularly useful for debugging scripts, web applications, or data processing pipelines where print statements are insufficient, and it integrates seamlessly with Python's standard library without external dependencies.