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From: Kushal Kumaran <kushal.kumaran+python@gmail.com>
Date: Fri, 1 Jul 2011 22:31:42 +0530
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Subject: Re: urllib, urlretrieve method, how to get headers?
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:8639

On Fri, Jul 1, 2011 at 2:23 PM, =D0=94=D0=B0=D0=BD=D0=B8=D0=B8=D0=BB =D0=A0=
=D1=8B=D0=B6=D0=BA=D0=BE=D0=B2 <daniil.re@gmail.com> wrote:
> Hello again!
> Another question: urlopen() reads full file's content, but how can I
> get page by small parts?
>

Set the Range header for HTTP requests.  The format is specified here:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.  Note
that web servers are not *required* to support this header.

In [10]: req =3D urllib2.Request('http://cdimage.debian.org/debian-cd/6.0.2=
.1/amd64/iso-cd/debian-6.0.2.1-amd64-CD-1.iso',
headers =3D { 'Range' : 'bytes=3D0-499' })

In [11]: f =3D urllib2.urlopen(req)

In [12]: data =3D f.read()

In [13]: len(data)
Out[13]: 500

In [14]: print f.headers
Date: Fri, 01 Jul 2011 16:59:39 GMT
Server: Apache/2.2.14 (Unix)
Last-Modified: Sun, 26 Jun 2011 16:54:45 GMT
ETag: "ebff2f-28700000-4a6a04ab27f10"
Accept-Ranges: bytes
Content-Length: 500
Age: 225
Content-Range: bytes 0-499/678428672
Connection: close
Content-Type: application/octet-stream


--=20
regards,
kushal