text.py 文件源码

def get_text_list(list_, last_word=ugettext_lazy('or')):
    """
    >>> get_text_list(['a', 'b', 'c', 'd'])
    'a, b, c or d'
    >>> get_text_list(['a', 'b', 'c'], 'and')
    'a, b and c'
    >>> get_text_list(['a', 'b'], 'and')
    'a and b'
    >>> get_text_list(['a'])
    'a'
    >>> get_text_list([])
    ''
    """
    if len(list_) == 0:
        return ''
    if len(list_) == 1:
        return force_text(list_[0])
    return '%s %s %s' % (
        # Translators: This string is used as a separator between list elements
        _(', ').join(force_text(i) for i in list_[:-1]),
        force_text(last_word), force_text(list_[-1]))