How can I run Python code in Ruby?

Question

I want to put my Python code in Ruby Module and run it, but I don't know how to import the Python stand-alone script into Ruby. The following are my code:

Python code

import ystockquote
import pprint
pprint.pprint(ystockquote.get_all('GOOG'))

Ruby

module PythonInRuby
require "rubypython"

RubyPython.start # start the Python interpreter

cPickle = RubyPython.import("cPickle")
p cPickle.dumps("Testing RubyPython.").rubify

RubyPython.stop # stop the Python interpreter

The problem is that between the RubyPython.start and RubyPython.stop, I don't know how to import the Python file. And another problem is what the code is for running Ruby in this module?

This is likely the most complicated and brittle way to solve this issue possible. Why do you want this? — Lennart Regebro
– Lennart Regebro, Commented Aug 16, 2013 at 14:54
Because I don't know how to get financial data using Ruby language. — user2668789
– user2668789, Commented Aug 16, 2013 at 14:56
Make a script in Python to get the financial data, and call it with a subprocess call from Ruby. Much easier. — Lennart Regebro
– Lennart Regebro, Commented Aug 16, 2013 at 14:57
So, I guess the next logical question is, if you know how to do it in Python, why do you need to use Ruby? — Charles Caldwell
– Charles Caldwell, Commented Aug 16, 2013 at 14:58

John Y · Accepted Answer · 2013-08-16 15:16:33Z

2

This is a completely overdone, over-complicated way to do this, but here's how anyway.

Say your python module (file) is named googstock.py. It should look like this:

import ystockquote

def run():
    return ystockquote.get_all('GOOG')

Then your Ruby can look like this:

RubyPython.start

googstock = RubyPython.import('googstock')
puts googstock.run().rubify #Get the stock data into Ruby

RubyPython.stop

In the future though, try just getting the stock values from Yahoo!'s API in Ruby. It can't be that hard.

edited Aug 16, 2013 at 15:16

John Y

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answered Aug 16, 2013 at 15:11

Linuxios

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2 Comments

user2668789 Over a year ago

Thanks so much, by the way, how can I run this ruby module on rails?

Linuxios Over a year ago

@user2668789: Depends where you're hosting the code. But for that, I suggest calling the API directly. This is not production ready, and for something so simple converting really is an option.

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