def list_get_max_wordwidth(l):
    """
        l = ['a','bb','hello','xx','你好吗']
        list_get_max_wordwidth(l)
    """
    maxValueWidth = 0
    for each in l:
        eachValueWidth = each.__len__()
        if eachValueWidth > maxValueWidth:
            maxValueWidth = eachValueWidth
    return maxValueWidth
