PyCharm by JetBrains - Powerful Python and Django IDE

PyCharm — Python IDE with complete set of tools for productive development with Python programming language. In addition, the IDE provides high-class capabilities for professional Web development with Django framework.
More information about PyCharm.

Check Tutorials section. Read our blog. Follow us on Twitter. Join our forum.

Please report any bugs and file feature requests in issue tracker.
PyCharm includes bundled evaluation license key for a free 30-day trial.
Download the latest stable release here.

Early Access Program builds are available here.

PyCharm Development Roadmap
Quickstart Guide
Resources & Documentation
Product Web Site
Discussion Forum

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The latest Python plugin for IntelliJ IDEA can be downloaded from the Plugin Reposotiry.
Current Feature List
Version 2.5 Release Notes - for IntelliJ IDEA 9.0.2
Version 2.2 Release Notes - for IntelliJ IDEA 9.0
Version 2.1 Release Notes - for IntelliJ IDEA 8.0
Version 2.0 Release Notes

Choosing between IntelliJ IDEA with Python plugin and PyCharm? Find out the differences.