Question

i am using the python shell to try to do debugging

i set a breakpoint

i did:

>>> import pdb
>>> import mymodule
>>> pdb.run('mymodule.test()')

but it is just running my program without stopping at the breakpoint!

what am i donig wrong?

Answer 1

How did you set a breakpoint? Try adding the line in your code:

import pdb
pdb.set_trace()

and then run it. If you’re in the pdb shell, then “break foo.py:45” will break on line 45 of file foo.py.

Here are some useful commands:

h    help, list commands
s    step through current line
n    step to next line
u    go up the stack
c    continue execution

Check the full list by typing ‘h’. And “help X” will give you help on command X. Also, see this tutorial:

• Interactive Debugging in Python