Hervé RIVIERE 34734b9c8a [ZEPPELIN-502] Python interpreter group ... ### What is this PR for? Adding a python 2 &3 interpreter. It's a basic implementation (no py4j for example), with a java ProcessBuilder object used to instantiate a python REPL. The interpreter doesn't bring it own python binary but uses the python specified by python.path configutation. Thus, you can still use your specific installed python modules (scikit-learn, matplotlib...) and the interpreter is able to work with python 2 & 3 without change. I had a python helper function (zeppelin_show() ) to easily display matplotlib graph as SVG. ### What type of PR is it? [Feature] ### Todos * [x] - Code review * [x] - Improve bootstrap.py : choose available helper functions and their names * [x] - Unit / IT tests ? * [x] documentation updates needed, that AhyoungRyu pointed out * [X] LICENSE needs to be updated to include all non-apache licensed dependencies (i.e AFAIK Py4j is BSD ) in bin-license * [x] double-check that code formatting conforms project style guide * [x] the branch need to be rebased on latest master. ### What is the Jira issue? [ZEPPELIN-502](https://issues.apache.org/jira/browse/ZEPPELIN-502?jql=project%20%3D%20ZEPPELIN%20AND%20text%20~%20%22python%22) ### How should this be tested? 1. In interpreter screen, in Python section, specify in python.path the python binary you want to use 2. In a paragraph, you can use the interpreter with **_%python_**. Calling help() will describe you the interpreter functionnalities. 3. Install py4j (pip install py4j) if you want to use input form ### Screenshots     ### Questions: * Does the licenses files need update? Yes, only bin-license (py4j) * Is there breaking changes for older versions? No * Does this needs documentation? Yes Author: Hervé RIVIERE <hriviere@users.noreply.github.com> Closes #869 from hriviere/PR_interpreter_python and squashes the following commits: 80b6e75 [Hervé RIVIERE] [ZEPPELIN-502] move BSD py4j license to zeppelin-distribution/src/bin_license/license a4b82a5 [Hervé RIVIERE] [ZEPPELIN-502]Improving doc following @AhyoungRyu review 3252353 [Hervé RIVIERE] [ZEPPELIN-502] Formatting code to respect project convention 54ec4f1 [Hervé RIVIERE] [ZEPPELIN-502]Improving doc following @AhyoungRyu review 6a831bc [Hervé RIVIERE] [ZEPPELIN-502] Add BSD py4j license 11e1b9c [Hervé RIVIERE] [ZEPPELIN-502] minor changes in python.md e5d0bdb [Hervé RIVIERE] [ZEPPELIN-502] change PYTHON_PATH to ZEPPELIN_PYTHON c62ac98 [Hervé RIVIERE] [ZEPPELIN-502] Improve python.md 5008125 [Hervé RIVIERE] [ZEPPELIN-502] Improve python.md with features not yet supported and technical description 7d533e1 [Hervé RIVIERE] [ZEPPELIN-502] Add tests and reformating code to help tests writing fecaf25 [Hervé RIVIERE] [ZEPPELIN-502] Rename python.path to python and default from /usr/bin/python to python 02d1320 [Hervé RIVIERE] [ZEPPELIN-502] Input form, change from simple input form to native (pyspark syntax) 60d2956 [Hervé RIVIERE] [ZEPPELIN-502] Indent as pep8 convention 9bdb192 [Hervé RIVIERE] [ZEPPELIN-502] Add python.md to _navigation.html 7142aa5 [Hervé RIVIERE] [ZEPPELIN-502] Catch exception in logger.error 1a86ad7 [Hervé RIVIERE] [ZEPPELIN-502] Python interpreter group		2016-05-31 23:34:05 +09:00
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java/org/apache/zeppelin/python	[ZEPPELIN-502] Python interpreter group	2016-05-31 23:34:05 +09:00
resources	[ZEPPELIN-502] Python interpreter group	2016-05-31 23:34:05 +09:00