def write_length(lst, number=4):
"""
每次取数组中的number个元素写入文件中并换行
@param lst: 数组
@param number: 长度
"""
with open("text.txt", mode="w", encoding="utf-8") as fil:
count = len(lst)
for i in range(0, count, number):
tmp = [str(j) for j in lst[i: i + number]]
content = ''.join(tmp) + "\n"
fil.writelines(content)
test_lst = list(range(10))
write_length(test_lst)