Python Twisted does not work on Eclipse

I开发者_如何学运维 installed Twisted for Python and I am trying to build a simple server on Eclipse and I am getting the following error:

ImportError: No module named zope.interface

I'm not sure how to correct this. Doesn't Twisted install all of the dependencies first?

Make sure you:

1. Have PyDev installed
2. Have twisted / zope.interface installed and in your PYTHONPATH.
3. Have configured your eclipse project as a python/pydev project.
4. Have configured the interpreter in the Eclipse environment (Pydev settings).