To set up the Python runtime for Burp Extensions, perform the following steps:
Download a stable version of Jython standalone JAR file from http://mirrors.ibiblio.org/maven2/org/python/jython-standalone/2.5.3/.
Save the file to
E:\jython\jython-standalone-2.5.3.jar
.Configure the path in Extender | Options | Python Environment.
We are all set to run Python-based Burp Extensions now.
Similarly, we can easily set up the Ruby environment required to run Burp Extensions written in Ruby.