在python 3中从http打开图像 [英] Opening image from http in python 3
问题描述
我知道现在有上千个这样的问题，但是所提供的解决方案都没有真正起作用. 我正在使用pythong 3.4. 我想直接将URL作为图像打开，而不是先将其存储在磁盘上.
I know there are a thousand questions like that out there but none of the provided solutions do actually work. I am using pythong 3.4. I would like to directly open the url as an image, not store it first on the disk.
基本上，代码归结于此
from PIL import Image <br />
import urllib.request <br />
... <br />
opener = urllib.request.build_opener() <br />
file = opener.open("http://pixel.quantserve.com/pixel") <br />
img = Image.open(file.read()) <br />
width, height = img.size
这给我带来了一个错误.我也尝试了没有
.读()
和
文件= urllib.request.urlopen("...")
有和没有.read()
This yields for me an error. I also tried it without the
.read()
and with
file = urllib.request.urlopen("...")
both with and without the .read()
基本上我迷路了.我唯一能做的就是更改python向我抛出的错误.谢谢你的帮助！
带有上述版本的错误消息:
TypeError:嵌入的NUL字符
没有read()
io.UnsupportedOperation:查找
使用不带.read()的"urllib.request.urlopen(" ...)
io.UnsupportedOperation:查找
与.read()
TypeError:嵌入的NUL字符
Basically I am lost. The only thing I can do is change the error that python is throwing at me. Thanks for any help!
Error messages with the above mentioned version:
TypeError: embedded NUL character
Without the read()
io.UnsupportedOperation: seek
With "urllib.request.urlopen("...") without .read()
io.UnsupportedOperation: seek
with .read()
TypeError: embedded NUL character
推荐答案
为避免使用tkinter并避免在本地写入文件，请使用缓冲区:
To avoid using tkinter and to avoid writing the file locally, use a buffer:
from PIL import Image
import urllib
from io import BytesIO
f = urllib.urlopen("http://pixel.quantserve.com/pixel")
b = BytesIO(f.read())
i = Image.open(b)
i # <PIL.TgaImagePlugin.TgaImageFile image mode=P size=512x17410 at 0x7FBA4A3712D8>
这使用的是2.7，但没有urllib.request，因此请根据需要进行修改.
This is using 2.7, which doesn't have urllib.request, so modify this as required.
另外，请注意，此图片似乎格式不正确/无效
Also, be aware that this image appears to be malformed/invalid
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