IPython pdb
Use
from ipdb import set_trace; set_trace()
or
from ipdb import pm; pm()
You then get all IPython features (tab completion, syntax highlighting, better tracebacks, better introspection) right in pdb.
If you install ipdb with a tool which supports setuptools entry points,
an ipdb script is made for you. You can use it to debug your scripts like
$ bin/ipdb mymodule.py
With Python 2.7 only, you can also use
$ python -m ipdb mymodule.py
Development
ipdb source code and tracker are at https://github.com/gotcha/ipdb.
Third-party support
Products.PDBDebugMode
Zope2 Products.PDBDebugMode uses ipdb, if available, in place of pdb.
iw.debug
iw.debug allows you to trigger an ipdb debugger on any published object
of a Zope2 application.
ipdbplugin
ipdbplugin is a nose test runner plugin that also uses the IPython debugger
instead of pdb. (It does not depend on ipdb anymore).