code: def to_name(key):
      
      item = find(whatever=key)
      if not item:
          raise NonExistentLanguageError('Language does not exist.')
      return item[u'name']
docs: Find the English name for the language specified by key.
  
      >>> to_name('br')
      u'Breton'
      >>> to_name('sw')
      u'Swahili'