Making objective-C works with Python

Here are simple steps when you want to make Objective-C sees Python class.

1. Prepare your Python file. Here you can use objective-C clases and etc.

from Foundation import *

import objc

class TestClass (NSObject):

def doit_(self, input):

print input

return "hello from Python"

2. Create a plug-in. Create a setup script like this (replace 'helloPython.py' with your script name):

from distutils.core import setup

import py2app

setup(

plugin = ['helloPython.py']

)

And run the setup script with this command:

python setup.py py2app

You'll get a .plugin folder in dist folder

3. Adds plug-in to your project. Drag the file into Resource folder in your Xcode project. Choose: Create Folder References for any added folders when Xcode ask

4. Load plug-in in objective-C by adding this code (change helloPython to your .plugin name)

NSString *pluginPath = [[NSBundle mainBundle]

pathForResource:@"helloPython"

ofType:@"plugin"];

NSBundle *pluginBundle = [NSBundle bundleWithPath:pluginPath];

[pluginBundle load];

4. Creating a python-class object in Objective-C

Class TestClass = NSClassFromString(@"TestClass");

id pyObj = [[TestClass init] alloc];

NSString *result = [pyObj doit:@"sent from obj-c"];

NSLog(result);