Can I Write Parts Of The Google App Engine Code In Java, Other Parts In Python?

Google App Engine supports both Python and Java application development. Can I have both in the same application?

Solution 1:

Can I run Java and Python code in the same app?

Each version of the app must specify a runtime language and it is possible to have version x of your app running Java, while version y is running Python. It would also be possible to use Jython.

Source: Google App Engine for Java FAQ

Solution 2:

As far as I know, there are two ways:

• Write another app in java, publish it as a web services and call it from python (but that's not what you are looking for)
• Make a java application but write it in jython. Then your app will be written in python, it will run on JVM, and calls to java API are trivial.

Solution 3:

Just to have an updated answer for this question,

From this answer on GAE google groups, it looks like it is possible to have different modules in different languages.