通过网络抓取图像并使用Python保存 [英] Grab an image via the web and save it with Python

问题描述

我希望能够下载图像(将其调整为我的计算机或Web服务器)，然后将其上载到S3.这里涉及的部分是:

I want to be able to download an image (to my computer or to a web server) resize it, and upload it to S3. The piece concerned here is:

在Python中完成下载部分的推荐方法是什么(即，不想使用外部工具，bash等).我希望将其存储到内存中直到完成(与将映像下载到本地驱动器，然后再使用它相比).非常感谢您的帮助.

What would be a recommended way to do the downloading portion within Python (i.e., don't want to use external tools, bash, etc). I want it to be stored into memory until it's done with (versus downloading the image to a local drive, and then working with it). Any help is much appreciated.

推荐答案

urllib (简单但有点粗糙)和 urllib2 (功能强大，但有点复杂)是推荐的标准库模块，用于从URL(到内存或磁盘)中获取数据.对于足够简单的需求，x=urllib.urlopen(theurl)将为您提供一个对象，该对象使您可以访问响应标头(例如，查找图像的内容类型)和数据(如x.read())； urllib2的工作原理类似，但比起简单的urllib，您可以控制代理，用户代理，coockies，https，身份验证等.

urllib (simple but a bit rough) and urllib2 (powerful but a bit more complicated) are the recommended standard library modules for grabbing data from a URL (either to memory or to disk). For simple-enough needs, x=urllib.urlopen(theurl) will give you an object that lets you access the response headers (e.g. to find out the image's content-type) and data (as x.read()); urllib2 works similarly but lets you control proxying, user agent, coockies, https, authentication, etc, etc, much more than simple urllib does.

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