Finds currently availabe keyboard layout input sources in Mac OSX using pyobjc.

osxKeyboardInputSources.py

import ctypes
import ctypes.util
import objc
import CoreFoundation

"""
Find currently availabe keyboard layout input sources in Mac OSX using pyobjc. Based on:
https://gist.github.com/tiann/f85e89bef4b6e9b83f2a
"""

_Carbon = ctypes.cdll.LoadLibrary(ctypes.util.find_library('_Carbon'))
_objc = ctypes.PyDLL(objc._objc.__file__)
_objc.PyObjCObject_New.restype = ctypes.py_object
_objc.PyObjCObject_New.argtypes = [ctypes.c_void_p, ctypes.c_int, ctypes.c_int]

def objcify(id):
    return _objc.PyObjCObject_New(id, 0, 1)

kTISPropertyInputSourceLanguages_p = ctypes.c_void_p.in_dll(_Carbon, 'kTISPropertyInputSourceLanguages')
kTISPropertyInputSourceType_p = ctypes.c_void_p.in_dll(_Carbon, 'kTISPropertyInputSourceType')
kTISPropertyLocalizedName_p = ctypes.c_void_p.in_dll(_Carbon, 'kTISPropertyLocalizedName')

_Carbon.TISCreateInputSourceList.restype = ctypes.c_void_p
_Carbon.TISCreateInputSourceList.argtypes = [ctypes.c_void_p, ctypes.c_bool]
_Carbon.TISSelectInputSource.restype = ctypes.c_void_p
_Carbon.TISSelectInputSource.argtypes = [ctypes.c_void_p]
_Carbon.TISGetInputSourceProperty.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
_Carbon.TISGetInputSourceProperty.restype = ctypes.c_void_p
_Carbon.TISCopyInputSourceForLanguage.argtypes = [ctypes.c_void_p]
_Carbon.TISCopyInputSourceForLanguage.restype = ctypes.c_void_p

class keyboardInputSource():

    def __init__(self, TISInputSource):
        self._TISInputSource = TISInputSource
        self._objcId = TISInputSource.__c_void_p__()

    def getProperty(self, propertyName):
        return objcify(_Carbon.TISGetInputSourceProperty(self._objcId, propertyName))

    def getLocalizedName(self):
        return str(self.getProperty(kTISPropertyLocalizedName_p))

    def getDefaultLanguageName(self):
        return self.getProperty(kTISPropertyInputSourceLanguages_p)[0]

    def isKeyboardLayout(self):
        return str(self.getProperty(kTISPropertyInputSourceType_p)) == "TISTypeKeyboardLayout"

def getAllKeyboardLayoutsMap():
    result = {}
    for o in objcify(_Carbon.TISCreateInputSourceList(None, 0)):
        ins = keyboardInputSource(o)
        if ins.isKeyboardLayout():
            result[ins.getDefaultLanguageName()] = ins.getLocalizedName()
    return result

def selectKeyboard(lang):
    """lang: 'en', 'fa', ..."""
    cur = _Carbon.TISCopyInputSourceForLanguage(CoreFoundation.CFSTR(lang).__c_void_p__())
    _Carbon.TISSelectInputSource(cur)

print(getAllKeyboardLayoutsMap())