Using NLTK in C# via IronPython

Question

I'm using Visual Studio 2010. I have an IronPython console project and a C# console project. This IronPython script works fine when I run it by itself:

import nltk

def Simple():
    baconIpsumFile = open('baconipsum.txt', 'r')
    baconIpsumCorpus = baconIpsumFile.read()

    tokens = nltk.word_tokenize(baconIpsumCorpus)
    text = nltk.Text(tokens)
    print text

Here is the C# console program, which does not work fine:

using IronPython.Hosting;

namespace IronNLTK.CSharp.Console
{
    class Program
    {
        static void Main(string[] args)
        {
            var ipy = Python.CreateRuntime();
            dynamic test = ipy.UseFile("C:\\Path\\To\\Program.py");
            test.Simple();
        }
    }
}

I get an ImportException: No module named nltk. What am I missing?

Can you interact with the ipy runtime and adjust the path there? — Travis
– Travis, Commented Sep 19, 2011 at 14:19
I've also tried that. I.e. the accepted answer in stackoverflow.com/questions/1371994/… — Matthew Groves
– Matthew Groves, Commented Sep 19, 2011 at 14:41

Community · Accepted Answer · 2017-05-23 12:32:47Z

3

sounds like you need to update sys.path to point to wherever NLTK lives.

check this out: Importing external module in IronPython

edited May 23, 2017 at 12:32

CommunityBot

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answered Sep 16, 2011 at 15:59

Oren Mazor

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4 Comments

Matthew Groves Over a year ago

if you mean something like sys.path.append(r"c:\Program Files (x86)\IronPython\Lib") that doesn't work either

Michael Dillon Over a year ago

Of course that does not work. Backslash is the string escape character. If you want to put a path in a Python string, then you need to do C:/Progr... or C:\\Progr...

Michael Dillon Over a year ago

In addition, it is not unusual for portable software to have a problem with paths that contain spaces in the name. Have you tried installing another instance of IronPython in C:\IronPython so that you don't have any directories with space in the names?

Matthew Groves Over a year ago

Yes, sorry, I did use escaped backslashes, I'll look into the spaces in the path name though...

reti · Accepted Answer · 2017-10-13 22:12:20Z

2

Awesome news, Visual Studio 2017 is embedded with Anaconda’s Python distribution which has NTLK and other machine learning packages.

answered Oct 13, 2017 at 22:12

reti

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