如何用python删除最后一行文本？

Question

我用这段代码写txt：myList =[[1,2,3],[4,5,6],[7,8,9]]with open(r'D:/abc.txt', "w", encoding="utf-8") as fo:    for row in myList:        list1 = [(str(item) + " ") for item in row]        fo.writelines(list1)        fo.write('\n')其实结果是4行，最后一行是空的。'\n' 是最后一个空行。如何删除最后一行？

Answer 1

使用join反而会更好：

with open(r'D:/abc.txt', "w", encoding="utf-8") as fo:

    fo.write('\n'.join([' '.join(map(str,i)) for i in myList]))

当你打开时abc.txt，它看起来像：