Basic use of Python debugging tool PDB

usage

The pdb tool is Python's own debugging tool, which can debug code on the command line.

Usage example:

import pdb

num_a=1
num_b=2

pdb.set_trace()

sum=num_a+num_b

The running effect is as follows:

Common commands

• break or b: set breakpoint

• continue or c: continue executing the program

• list or l: View the code segment of the current line

• step or s: enter the function (use next instead of step to enter the for loop)

• return or r: execute code until returning from the current function

• next or n: execute the next line

• up or u: return to the previous call point (not the previous line)

• px: print the value of variable x

• exit or q: terminate debugging and exit the program

• help: help