python 读文件readline ,如何读一行删除一行

Question

python处理文件处理想要读一行删一行

Answer 1

import shutil

counter = 1
while True:
    with open('test.txt') as fin:
        line = fin.readline()
        if len(line) == 0:
            break

        print(line.strip())

        with open(f'delete-{counter}-line.txt', 'w+') as fout:
            shutil.copyfileobj(fin, fout)

    shutil.copy(f'delete-{counter}-line.txt', 'test.txt')
    counter += 1

所以你到底想干啥？