Eclipse with PyDev vs Light Table

Eclipse has a large and active community, which has resulted in a wide variety of plugins.

Django Integration, Auto code completion, Multi language support, Integrated Python Debugging, code analysis, code templates ,smart indent, bracket matching, error markup, source control integration, code folding, UML Editing and viewing, and unit test integration.

If your project includes non-Python pieces (ie. Javascript, CSS, UML, etc) Eclipse tends to provide much better support for these than IDEs focused exclusively on Python.

It's very handy for managing multiple projects that each use their own virtualenv or conda environment, you can assign a different interpreter to each project and they will handle things like code completion correctly.

Because Eclipse is based on SWT, it uses the native font rendering and thus looks better than other IDEs on some Linux systems, where the Java font rendering is not optimal.

It handles both Jython and CPython.

With LT's inline evaluation, you don't have to re-compile your whole source file. Each time you want to see an output, all you have to do is hover your cursor over the line you'd like to evaluate and press ctrl+enter; LT will evaluate that line of code for you.

The "Watches" feature lets you see your code running live as you type it. This means that you can debug your code live while writing it, which leads to considerably less programming errors.

LT has a plugin manager built directly inside of it. This plugin manager connects to LT's own registry of plugins, so whenever you want assistance while writing your HTML, JS, or even Python, just open up the plugin manager, search for it, and click the little install button beside it's name. Your plugin will then be installed.