Python parser in Java (used in Jython)
ANTLR Grammer https://github.com/maldil/JPythonParser/blob/master/src/main/antlr3/python3/PythonParser.java
Example https://github.com/maldil/JPythonParser/blob/master/src/main/java/astnodes/AnalyzingParser.java