Is there a Python equivalent of Groovy/Grails for Java

I'm thinking of something like Jython/Jango? Does this exist? Or does Jython allow you to do everything-Python in Java including Django (I'm not sure how Jython differs from Python)?

From stackoverflow

• http://wiki.python.org/jython/DjangoOnJython

• "I'm not sure how Jython differs from Python"

  http://www.jython.org/Project/

  Jython is an implementation of the high-level, dynamic, object-oriented language Python seamlessly integrated with the Java platform.

  http://docs.python.org/reference/introduction.html#alternate-implementations

  Python implemented in Java. This implementation can be used as a scripting language for Java applications, or can be used to create applications using the Java class libraries. It is also often used to create tests for Java libraries. More information can be found at the Jython website.