The following are links for different editors and IDEs for Python:
Python tools for Visual Studio (used primarily with this book, and works well with pygal) can be found at http://pytools.codeplex.com
PyDev for Eclipse can be found at http://pydev.org
CodeRunner for Mac (a nice editor for running quick Python scripts and works well with matplotlib projects) can be found at http://krillapps.com/coderunner/
Sublime Text (a great, lightweight editor for cross-platform editing) can be found at http://www.sublimetext.com
PyCharm (a full IDE alternative to PyDev and Visual Studio) can be found at http://www.jetbrains.com/pycharm/