How to use the pycountry.languages.lookup function in pycountry

TRANSIFEX_USER = ""
    TRANSIFEX_PW = ""

csvFile = open("app/src/main/assets/translators.csv", "w")
contributorsFile = open("CONTRIBUTORS", "a")
r = requests.get('http://www.transifex.com/api/2/project/antennapod/languages/',
        auth=(TRANSIFEX_USER, TRANSIFEX_PW))
for lang in r.json():
    langContributers = lang['coordinators'] + lang['reviewers'] + lang['translators']
    langContributers = sorted(langContributers, key=str.lower)
    langCode = lang['language_code']
    try:
        langName = pycountry.languages.lookup(langCode).name
    except:
        try:
            langName = pycountry.languages.lookup(
                langCode.split('_')[0]).name + ' (' + langCode + ')'
        except:
            langName = lang['language_code']
            print('\033[91mLanguage code not found:' + langCode + '\033[0m')

    joinedTranslators = ', '.join(langContributers).replace(';', '');
    contributorsFile.write(langName + ": " + joinedTranslators + '\n')
    csvFile.write(langName + ';' + joinedTranslators + '\n')
    print(langName + ';' + joinedTranslators)
csvFile.close()
contributorsFile.close()

def name_for_lang(rep):
    """ Get the language name from a representation of the language"""
    try:
        return pycountry.languages.lookup(rep).name
    except LookupError:
        return rep

def makeLanguageName(self, langCode):
        code = re.sub("-.*","",langCode)
        try:
            language = pycountry.languages.lookup(code)
            match = re.match(r'^[^-]+-(.*)$',langCode)
            name = language.name
            if match is not None:
                name = "%s (%s)" % (name, match.group(1).upper())
        except LookupError:
            name = langCode

        return name

def suggest_language(q, limit=5):
    """Get language suggestions based on query q from a fixed dictionary.

    :param q: Query string to look for (e.g. 'Polish', 'ger', 'english')
    :type q: str
    :param limit: limit the result to 'limit' items
    :type limit: int
    :return: list of pycountry.db.Language
    """
    q = q.lower().strip()
    lut = None
    langs = []
    # If query is 2 or 3 char long, lookup for the ISO code
    if 2 <= len(q) <= 3:
        try:
            lut = pycountry.languages.lookup(q)
        except LookupError:
            pass
    # For queries longer than 2 characters, search by name
    if len(q) > 2:
        langs = list(itertools.islice(
            (l for l in pycountry.languages if q in l.name.lower()), limit))
    # Include the ISO-fetched language (if available) on first position
    if lut:
        langs = ([lut, ] + [l for l in langs if l != lut])[:limit]
    return langs

def language_for(rep):
    """ Get the entire language entry for a given representation """
    try:
        return pycountry.languages.lookup(rep)
    except LookupError:
        return None