按要求数目分行

from math import ceil


def split_word(lst, size):
    word_list = list(
        map(lambda x: lst[x * size:x * size + size],
            list(range(0, ceil(len(lst) / size)))))
    words = ''
    if size == 1:
        for word in word_list:
            words += word
    else:
        for word in word_list:
            words += word + '\n'
    return words