How to debug python code?

[Ravi Teja]

1.) Print statements
2.) IDEs

Most Python IDEs provide visual debuggers so that you don't have to use
command line ones such as pdb.

As with all languages that allow to be executated as a script as well,
print statements usually get the job done quite well in most cases.

Please read the Python FAQ (as you should for any new language you
learn) in its entirety.
http://www.python.org/doc/faq/
It answers your IDE question you posted in the other thread as well as
many of your future questions quite well.