无法关闭使用Python tempfile模块创建的临时文件

Question

我正在使用一个名为pydub的基于ffmpeg的模块来编辑音频文件。我正在尝试使用模块tempfile，但由于某种原因，我无法关闭文件（它们没有被删除）。使用上下文管理器时，它抛出permissionerr。

我所尝试的：

这段代码按照预期的方式工作，但是它没有删除tempfile，不会抛出任何错误。

temp1, temp2 = tempfile.NamedTemporaryFile(dir='data/temp', delete=False), None
# save something to temp1
seg = AudioSegment.from_file_using_temporary_files(temp1)

if options['overlay']:
    # create new seg
    if overlay_seg:
        temp2 = tempfile.NamedTemporaryFile(dir='data/temp', delete=False)
        # save something to temp2
        overlay_seg = AudioSegment.from_file_using_temporary_files(temp2)
        seg = seg.overlay(overlay_seg)

# edit the audio more here..

final = 'data//temp//edited.mp3'
seg.export(final, bitrate=options['bitrate'], format='mp3')
await ctx.send(file=discord.File(final)) # sends the file to a Discord chat
temp1.close()
if temp2:
    temp2.close()

这将创建第一个临时文件,然后抛出一个错误：

Traceback (most recent call last):
  File "C:\Users\User\AppData\Local\Programs\Python\Python38\lib\site-packages\discord\ext\commands\core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "<myfile>", line 153, in editaudio
    await attachment.save(temp1.name)
  File "C:\Users\User\AppData\Local\Programs\Python\Python38\lib\site-packages\discord\message.py", line 155, in save
    with open(fp, 'wb') as f:
PermissionError: [Errno 13] Permission denied: '<base>data\\temp\\tmpnf2r68qe'

with tempfile.NamedTemporaryFile(dir='data/temp') as temp1: 
    await attachment.save(temp1.name)
    seg = AudioSegment.from_file_using_temporary_files(temp1)
    if options['overlay']:
        # create new seg
        if overlay_seg:
            with tempfile.NamedTemporaryFile(dir='data/temp') as temp2:
                # save something to temp2
                overlay_seg = AudioSegment.from_file_using_temporary_files(temp2)
                seg = seg.overlay(overlay_seg)

    # edit the audio more here..

    final = 'data//temp//edited.mp3'
    seg.export(final, bitrate=options['bitrate'], format='mp3')
    await ctx.send(file=discord.File(final)) # sends the file to a Discord chat

我不确定我在这里错过了什么

Answer 1

如果您使用delete=false选项创建了tempfiles，那么您的tempfiles不会被删除。这是不言自明的，但也在文件中提到。

第二种方法很难调试，因为您没有提供一个最小的可复制示例。