At this point, you should be convinced about the great power and flexibility of IPython. Not only does IPython natively offer an impressive number of useful features, it also lets you extend and customize it in virtually any aspect. It should be noted, however, that this project is still evolving. Although it was created more than 10 years ago, Version 1.0 has still not been released at the time of writing. The core features of IPython are now quite stable and mature. The notebook, which is the most recent feature, is expected to evolve importantly in the coming years. The possibility to create custom interactive widgets in the notebook is planned and is likely to be a major feature of the whole project. More information about the upcoming developments can be found at https://github.com/ipython/ipython/wiki/Roadmap:-IPython and http://ipython.org/_static/sloangrant/sloan-grant.html.
Finally, IPython is an active open source project, meaning that anyone is welcome to contribute...