How Can I Effectively Debug Python Code?

Tracing Python Code to Locate Issues

In other programming languages like Java or C#, stepping through code to isolate problems is straightforward with the help of IDEs. Can Python offer a similar debugging method?

Solution: The Python Debugger (pdb)

Python features a built-in debugger called pdb that facilitates code tracing. To use pdb, launch your Python program with the command:

python -m pdb myscript.py

Upon launching, you can utilize the following pdb commands for debugging:

• b: Set a breakpoint
• c: Continue execution until reaching a breakpoint
• s: Step through the code
• n: Advance to the next line of code
• l: Display source code for the current file
• u: Move up the stack frame
• d: Move down the stack frame
• p: Evaluate an expression in the current context

For those preferring a graphical interface, IDEs such as Pydev, Wing IDE, or PyCharm offer GUI debuggers. While Wing and PyCharm are paid products, they have free versions available.

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