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From: Ian Kelly <ian.g.kelly@gmail.com>
Date: Wed, 7 May 2014 22:17:20 -0600
Subject: Re: data: protocol
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On Wed, May 7, 2014 at 4:42 AM, Robin Becker <robin@reportlab.com> wrote:
> I have an outstanding request for ReportLab to allow images to be opened
> using the data: scheme. That used to be supported in python 2.7 using
> urllib, but in python 3.3 urllib2 --> urllib and at least the default
> urlopener doesn't support data:
>
> Is there a way to use the residual legacy of the old urllib code that's now
> in urllib.URLopener to open unusual schemes? I know it can be used directly
> eg
>
> urllib.request.URLopener().open('data:.........')
>
> but that seems to leave the splitting & testing logic up to me when it
> logically belongs in some central place ie urllib.request.urlopen.

Seems to be fixed in Python 3.4:

Python 3.4.0 (v3.4.0:04f714765c13, Mar 16 2014, 19:24:06) [MSC v.1600 32 bit (In
tel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import urllib.request
>>> url = 'data:text/plain;charset=UTF-8,Hello%20World'
>>> urllib.request.urlopen(url).read()
b'Hello World'