[GitHub] incubator-zeppelin pull request: [ZEPPELIN-502] Python interpreter...

[hriviere]

GitHub user hriviere opened a pull request:

    https://github.com/apache/incubator-zeppelin/pull/869

    [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
    * [ ] - Code review
    * [ ] - Improve bootstrap.py : choose available helper functions and their 
names
    * [ ] - Unit / IT tests ?
    
    ### 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.
    
    ### Screenshots 
    
![image](https://cloud.githubusercontent.com/assets/12515751/14936724/5108fb60-0ef4-11e6-93ea-232a037f7957.png)
    
    
![image](https://cloud.githubusercontent.com/assets/12515751/14936736/7c4d0cf8-0ef4-11e6-94ca-663d00a2addd.png)
    
    
![image](https://cloud.githubusercontent.com/assets/12515751/14936715/0eec90de-0ef4-11e6-811b-7ebe46f0d279.png)
    
    
![image](https://cloud.githubusercontent.com/assets/12515751/14936718/31304cb2-0ef4-11e6-9271-df5527242799.png)
    
    ### Questions:
    * Does the licenses files need update? No
    * Is there breaking changes for older versions? No
    * Does this needs documentation? Yes
    


You can merge this pull request into a Git repository by running:

    $ git pull 
https://github.com/hriviere/incubator-zeppelin-python-interpreter 
PR_interpreter_python

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-zeppelin/pull/869.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #869
    
----
commit 489265a0ae2eff4a3618bad487f5b51143e0afd6
Author: Hervé RIVIERE <hrivi...@users.noreply.github.com>
Date:   2016-04-13T21:23:12Z

    [ZEPPELIN-502] Python interpreter group

----


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