There are few differences between Python and IPython but they are only the interpretation of few syntax like the few mentioned in the link below
http://ipython.org/
but deep inside the true flavor of Python is maintained even in the Ipython.
The best part of the IPython is the IPython notebook. You can put all your work into a notebook like script, image files, etc. But with base Python, you can only make the script in a file and execute it.
At start, you need to understand that the IPython is developed with the intention of supporting rich media and Python script in a single integrated container.