The Python language plugin allows to have python as the language of scripts to execute.
'org.elasticsearch:elasticsearch-lang-python:2.3.1'
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch-lang-python</artifactId>
<version>2.3.1</version>
</dependency>
<dependency org="org.elasticsearch" name="elasticsearch-lang-python" rev="2.3.1"/>
"org.elasticsearch", "elasticsearch-lang-python", "2.3.1"