The Python Debugger, commonly known as pdb, is a powerful tool that allows developers to debug their Python programs interactively. It provides features such as setting breakpoints, stepping through code line by line, inspecting stack frames, and evaluating expressions in the context of the current execution state. By using pdb, programmers can identify and fix bugs more efficiently, gaining insights into the flow of their code. Whether invoked directly in the code with pdb.set_trace() or through command-line options, pdb enhances the debugging experience, making it an essential tool for Python developers.