use Winpdb. It is a platform independent graphical GPL Python debugger with support for remote debugging over a network, multiple threads, namespace modification, embedded debugging, encrypted communication and is up to 20 times faster than pdb.
Features:
- GPL license. Winpdb is Free Software.
- Compatible with CPython 2.3 through 2.6 and Python 3000
- Compatible with wxPython 2.6 through 2.8
- Platform independent, and tested on Ubuntu Gutsy and Windows XP.
- User Interfaces: rpdb2 is console based, while winpdb requires wxPython 2.6 or later.
(source: winpdb.org)