[问题求助] Python如何把字符串加到文件行首？

netdzb

fo = open("01.txt","r+")
fo.seek(0, 0)
fo.write('coding.\n')
fo.close()
复制代码

我已经移动了文件指针了，还是把字符串加到了文件尾。

regabc

with open('new.txt', 'r+', encoding='utf-8') as fp:
con = fp.read()fp.seek(0)
fp.write('Hello world\n'+con)