我的 PIL（枕头）输出为 NoneType

Posted 2023-03-14

【中文标题】我的 PIL（枕头）输出为 NoneType

【英文标题】：My PIL (Pillow) is outputting as NoneType

【发布时间】：2020-11-29 15:11:43

【问题描述】：

所以我有这个代码：

    avurl = str(ctx.message.author.avatar_url)
    avurl = avurl.replace("?size=1024", "")
    async with aiohttp.ClientSession() as session:
        async with session.get(avurl) as second_image:
            image_bytes = await second_image.read()
    with Image.open(BytesIO(image_bytes)) as first_image:
        output_buffer = BytesIO()
        first_image.save(output_buffer, "png")
        output_buffer.seek(0)
    async with aiohttp.ClientSession() as session:
        async with session.get("https://i.imgur.com/dNS0WJO.png") as second_image:
            image_bytes = await second_image.read()
    with Image.open(BytesIO(image_bytes)) as second_image:
        output_buffer = BytesIO()
        first_image.save(output_buffer, "png")
        output_buffer.seek(0)
    first_image.paste(second_image, (0, 0))
    buf = io.BytesIO()
    first_image.save(buf, "png")
    file = discord.File(fp=first_image, filename="pfp.png")
    if arg1 is None:
        embed = discord.Embed(title=" ", color=0xD1661E)
        embed.set_author(name="Your Profile", icon_url=url1)
        embed.set_thumbnail(url="attachment://pfp.png")
        await ctx.send(embed=embed, file=file)

我正在尝试拍摄两张图片，一张是用户的 Discord 个人资料图片，然后在其上叠加一个具有透明度的 png。头像 url 给出了 .webp 但文档说 PIL 可以处理 .webp 文件。 我用 BytesIO 加载了两个图像，将它们放入 PIL，将它们粘贴在一起，我收到了这个错误：

Ignoring exception in command profile:
    Traceback (most recent call last):
      File "C:\Users\Nik\anaconda3\envs\beatsbot\lib\site-packages\PIL\ImageFile.py", line 166, in load
        seek = self.load_seek
    AttributeError: 'PngImageFile' object has no attribute 'load_seek'
    
    During handling of the above exception, another exception occurred:
    
    Traceback (most recent call last):
      File "C:\Users\Nik\anaconda3\envs\beatsbot\lib\site-packages\discord\ext\commands\core.py", line 83, in wrapped
        ret = await coro(*args, **kwargs)
      File "C:/Users/Nik/PycharmProjects/beatsbot/beats.py", line 2711, in profile
        first_image.paste(second_image, (0, 0))
      File "C:\Users\Nik\anaconda3\envs\beatsbot\lib\site-packages\PIL\Image.py", line 1483, in paste
        im.load()
      File "C:\Users\Nik\anaconda3\envs\beatsbot\lib\site-packages\PIL\ImageFile.py", line 169, in load
        seek = self.fp.seek
    AttributeError: 'NoneType' object has no attribute 'seek'
    
    The above exception was the direct cause of the following exception:
    
    Traceback (most recent call last):
      File "C:\Users\Nik\anaconda3\envs\beatsbot\lib\site-packages\discord\ext\commands\bot.py", line 892, in invoke
        await ctx.command.invoke(ctx)
      File "C:\Users\Nik\anaconda3\envs\beatsbot\lib\site-packages\discord\ext\commands\core.py", line 797, in invoke
        await injected(*ctx.args, **ctx.kwargs)
      File "C:\Users\Nik\anaconda3\envs\beatsbot\lib\site-packages\discord\ext\commands\core.py", line 92, in wrapped
        raise CommandInvokeError(exc) from exc
    discord.ext.commands.errors.CommandInvokeError: Command raised an exception: AttributeError: 'NoneType' object has no attribute 'seek'

所以它必须是 NoneType，但我不知道为什么。我很确定我正确加载了所有内容，但显然不是。

【参考方案1】：

我很难重现这一点，但是这部分看起来很奇怪。

with Image.open(BytesIO(image_bytes)) as second_image:
     output_buffer = BytesIO()
     first_image.save(output_buffer, "png")
     output_buffer.seek(0)

这是你第二次调用first_image.save()，但我预计这个块会调用second_image.save()

抱歉，这只是对代码的错误解释。