see https://github.com/MicrosoftTranslator/PythonConsole/blob/master/MTPythonSampleCode/MTPythonSampleCode.py

msTranslateApi.py

import json
import requests
import urllib
import sys
from xml.etree import ElementTree


doItAgain = "yes" #Control While loop


def GetToken(): #Get the access token from ADM, token is good for 10 minutes
    urlArgs = {
        'client_id': 'YOUR CLIENT ID',
        'client_secret': 'YOUR CLIENT SECRET',
        'scope': 'http://api.microsofttranslator.com',
        'grant_type': 'client_credentials'
    }

    oauthUrl = 'https://datamarket.accesscontrol.windows.net/v2/OAuth2-13'

    try:
        oauthToken = json.loads(requests.post(oauthUrl, data = urllib.urlencode(urlArgs)).content) #make call to get ADM token and parse json
        finalToken = "Bearer " + oauthToken['access_token'] #prepare the token
    except OSError:
        pass

    return finalToken
#End GetToken

def GetLang(token, text):
    headers = {"Authorization ": token}
    detectUrl = "http://api.microsofttranslator.com/v2/Http.svc/Detect?text={}".format(text)
    try:
        res = requests.get(detectUrl, headers = headers) #make request
        detectLang = ElementTree.fromstring(res.text.encode('utf-8'))
        print(detectLang.text)
    except OSError:
        pass

    return detectLang.text


def GetTextAndTranslate(finalToken):

    fromLangCode = " "
    toLangCode = " "
    textToTranslate = " "

    print " "
    print "   Language List"
    print "     Japanese (default)"
    print "     English"
    print "     German"
    print "     Italian"
    print "     Spanish"
    print "     French"

    #Get the desitination Language
    while (toLangCode == " "):
        destLang = raw_input("Type the name of a language from the list that you want to translate to: ")

        if (destLang == "english") or (destLang == "English"):
            toLangCode = "en"
        elif (destLang.lower() == "japanese"):
            toLangCode = "ja"
        elif (destLang == "German") or (destLang == "german"):
            toLangCode = "de"
        elif (destLang == "Italian") or (destLang == "italian"):
            toLangCode = "it"
        elif (destLang == "Spanish") or (destLang == "spanish"):
            toLangCode = "es"
        elif (destLang == "French") or (destLang == "french"):
            toLangCode = "fr"
        else:
            toLangCode = "ja"
            print " "

    #End while
    
    print " "

    textToTranslate = raw_input("Type the text that you want to translate:  ")

    fromLangCode = GetLang(finalToken, textToTranslate)
    print " "

    #Call to Microsoft Translator Service
    headers = {"Authorization ": finalToken}
    translateUrl = "http://api.microsofttranslator.com/v2/Http.svc/Translate?text={}&to={}".format(textToTranslate, toLangCode)
   
    try:
        translationData = requests.get(translateUrl, headers = headers) #make request
        translation = ElementTree.fromstring(translationData.text.encode('utf-8')) # parse xml return values
        print "The translation form {fromLang} to {toLang} :".format(fromLang=fromLangCode, toLang=toLangCode), translation.text #display translation

    except OSError:
        pass

    print " "
 
#End GetTextAndTranslate()


if __name__ == "__main__":
    
    finalToken = GetToken()
    
    while (doItAgain == 'yes') or (doItAgain == 'Yes'):
        GetTextAndTranslate(finalToken)
        print ' '
        doItAgain = raw_input('Type yes to translate more, any other key to end: ')
    #end while
    print('Good Bye')
#end main