Debugging your code with IPython
Debugging is an integral part of software development and interactive computing. A widespread debugging technique consists of placing print statements in various places in the code. Who hasn't done this? It is probably the simplest solution, but it is certainly not the most efficient (it's the poor man's debugger).
IPython is perfectly adapted for debugging, and the integrated debugger is quite easy to use (actually, IPython merely offers a nice interface to the native Python debugger pdb). In particular, tab completion works in the IPython debugger. This recipe describes how to debug code with IPython.
Note
Earlier versions of the IPython notebook did not support the debugger, that is, the debugger could be used in the IPython terminal and Qt console, but not in the notebook. This issue was fixed in IPython 1.0.
How to do it...
There are two not-mutually exclusive ways of debugging code in Python. In the post-mortem mode, the debugger steps into the code as soon...
