===== Install in your machine =====

If pudb is not installed in your machine, do : 

  sudo yum install python-pudb.noarch
  
or 
  sudo yum install python3-pudb.noarch

===== How to use ?  =====

Add in your python file 

<code>
import pudb;pu.db
</code>

to break at this line and start the debugger.
Alternatively, start your scripts with the ''%%pudb%%'' or ''%%pudb3%%'' command instead of ''%%python%%'' or ''%%python3%%''

You can find a tutorial here : http://heather.cs.ucdavis.edu/~matloff/pudb.html