Quoting Wikipedia: Jython, successor of JPython, is an implementation of the Python programming language written in Java. As for what uses it may have: Jython programs can seamlessly import and use any Java class. Except for some standard modules, Jython programs use Java classes instead of Python modules.

2012年6月12日 · I know Jython converts Python code into Java byte code, but are there any syntax changes between the two? and as a side question is Jython 3.x usable yet or is it still being ported?

2016年3月25日 · A Java process is your Jython application running on JVM (either is Java code calling Jython libraries, or a Python code that possibly requires integration with some Java libraries), and another CPython process runs to provide operations required from pandas.

2012年6月26日 · This didn't seem to do anything. The problem seems to be lying in some kind of internal delay in either the function call or print call within Jython. In python it works perfectly, but in Jython there is a delay when the function is called which makes it appear that the sleep is being called first. If I increased the wait time to 5 seconds, there is a short delay, then "started" is …

2018年5月25日 · As explained in Exception Handling and Debugging, you handle Java exceptions in Jython the same way you handle Python exceptions: As stated previously, it is a common practice in Jython to handle Java exceptions.

2011年7月8日 · Instead of writing only the UDFs in Python/Jython, or using streaming, you can put the whole job together in Python, using Python functions as "UDFs" in the same script as where the data processing pipeline is defined. Jython is used as the Python interpreter, and the MapReduce framework for the stream operations is Cascading.

2017年2月18日 · The Jython developers (and I'm one of them) are looking at supporting NumPy in the future, via support of the C Extension API, but this is very much preliminary planning indeed.

2015年11月5日 · While jython was out of my control I did control how I sent the data so instead of using JSON, I sent formatted strings and then used the python ast library, which was in jython, to turn those strings into python objects. In the end it looked something like this: thestring = """['name', 'quest', 'favorite color']"""

The Jython compiles, but it doesn't return a valid value (it returns None). I think this is because I haven't referenced the array properly. How can I parse the JSON object/array using Jython to get the ZONE value? (Jython version is 2.7.0. However, I can't seem to use Python's JSON library (normally included in Jython)).

In terms of performance, Py4J has a bigger overhead than both of the previous solutions (Jython and JPype) because it relies on sockets, but if performance is critical to your application, accessing Java objects from Python programs might not be the best idea.