'Return the name of a specified language by :attr:`l_locale`.
.. note:: This is a `classmethod`.
:param l_locale: Locale tag of a specified language.
:type l_locale: str
:return: Localized name of a specified language.
:type: str'

@classmethod
def get_language_by_locale(cls, l_locale):

    try:
        return cls.language[l_locale]
    except KeyError:
        return cls.language['en_US']
