how to debug in python

1a. insert a breakpoint() before any line you want to check

1b. then in the pdb mode:-
use dir to check the object values
use c to continue
use type to check data type
use esc to quit

or

2a. use the following lines to track the bug

try:
    something()
except:
    breakpoint()

the program will enter pdb mode and you can use the same thing as 1.