python - ZipFile 不在存档文件内存储任何文本

Question

以下代码会导致 zip 中找到的文件为空，而不是其中包含一些文本:

def func(path):
    with tempfile.NamedTemporaryFile() as f:
        f.write('some text')
        with zipfile.ZipFile(path + '.zip', 'w', zipfile.ZIP_DEFLATED) as zf:
            zf.write((f.name), path)

Answer 1

将flush添加到文件对象:

def func(path):
    with tempfile.NamedTemporaryFile() as f:
        f.write('some text')
        f.flush()  # <-- lifesaver
        with zipfile.ZipFile(path + '.zip', 'w', zipfile.ZIP_DEFLATED) as zf:
            zf.write((f.name), path)

此问题也会影响正常(非临时)文件，因此它们也需要 flush 处理:

def func(path):
    with open(path, 'w') as f:
        f.write('some text')
        f.flush()  # <-- lifesaver
        with zipfile.ZipFile(path + '.zip', 'w', zipfile.ZIP_DEFLATED) as zf:
            zf.write(path)

或者，消除第二个 with block 的凹痕将避免使用 flush，因为当该 block 退出时文件会自动关闭，从而增加了它被刷新的机会:

def func(path):
    with open(path, 'w') as f:
        f.write('some text')
    with zipfile.ZipFile(path + '.zip', 'w', zipfile.ZIP_DEFLATED) as zf:
        zf.write(path)

请注意，这仅适用于第二个示例，不适用于第一个示例；请参阅tempfile docs究其原因。