| [palettable](https://pypi.python.org/pypi/palettable) | Color palettes for Python. |
| [pandas](https://pypi.python.org/pypi/pandas) | Powerful data structures for data analysis, time series,and statistics. |
| [phonopy](http://python.org/) | Python is a programming language that lets you work more quickly and integrate your systems more effectively. |
| [Pillow](http://pillow.readthedocs.org/) | Pillow is the 'friendly PIL fork' by Alex Clark and Contributors. PIL is the Python Imaging Library by Fredrik Lundh and Contributors. |
| [pluggy](https://github.com/pytest-dev/pluggy) | Plugin and hook calling mechanisms for python. |
| [pudb](https://pypi.python.org/pypi/pudb) | PuDB is a full-screen, console-based visual debugger for Python. |
| [pybtex](https://pypi.python.org/pypi/pybtex) | A BibTeX-compatible bibliography processor in Python. |
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@@ -398,6 +399,7 @@
| [pytest](http://pytest.org) | Simple powerful testing with Python |
| [python-dateutil](https://github.com/dateutil/dateutil) | Useful extensions to the standard Python datetime features. |
| [pytz](http://pytz.sourceforge.net/) | pytz brings the Olson tz database into Python. This library allows accurate and cross platform timezone calculations using Python 2.4 or higher. |