PIL/urllib2-使用StringIO传递文件时无法识别图像文件 [英] PIL / urllib2 - cannot identify image file when passing file using StringIO

问题描述

我正在使用urllib2从网络下载图像.下载完后，我想使用一个称为PIL的图像模块对它进行一些处理.我不想将文件保存到磁盘然后重新打开，而是使用StringIO

I'm downloading an image from the web using urllib2. Once I have downloaded it I want to do some stuff with it using an image module called PIL. I don't want to save the file to disk then reopen but rather pass it from memory using StringIO

from PIL import Image

image_buff = urllib2.urlopen(url)
image = Image.open(StringIO.StringIO(image_buff))

但是，当我这样做时，出现以下错误

However when I do this I get the following error

IOError: cannot identify image file <StringIO.StringIO instance at 0x101afa2d8

我认为这是因为我没有传递字符串，而是传递了urllib2对象/实例.有谁知道我如何正确地将字符串传递给PIL.

I think this is because I'm not passing a string but rather a urllib2 object/instance. Would anyone know how I can pass a string to PIL correctly.

推荐答案

您需要.read()您的urllib2.urlopen对象:

import StringIO
from PIL import Image

image_buff = urllib2.urlopen(url).read()
image = Image.open(StringIO.StringIO(image_buff))

这篇关于PIL/urllib2-使用StringIO传递文件时无法识别图像文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！