Stepping Through the Code

Explore how to use Python’s pdb debugger to step through code line by line, inspect arguments, and jump to lines for efficient debugging. Learn commands like step, next, args, and jump to control program flow and troubleshoot your Python scripts.

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Javascript (babel-node)

C:\Users\mike>cd c:\py101
c:\py101>python -m pdb debug_test.py
> c:\py101\debug_test.py(4)<module>()
-> def doubler(a):
(Pdb) step
> c:\py101\debug_test.py(11)<module>()
-> def main():
(Pdb) s
> c:\py101\debug_test.py(16)<module>()
-> if __name__ == "__main__":
(Pdb) s
> c:\py101\debug_test.py(17)<module>()
-> main()
(Pdb) s
--Call--
> c:\py101\debug_test.py(11)main()
-> def main():
(Pdb) next
> c:\py101\debug_test.py(13)main()
-> for i in range(1,10):
(Pdb) s
> c:\py101\debug_test.py(14)main()
-> doubler(i)
(Pdb)