Downloading a zip file

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May 25th, 2004, 04:16 PM

karlovac

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Join Date: Jul 2003

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Downloading a zip file

I'm trying to downlod a .zip file over HTTP and save it to the local filesystem (then extract it).

I'm doing:

Code:

    conn = httplib.HTTPConnection( "www.myserver.com" )
    conn.request( "GET", "/images/devnews_images.zip" )
    resp = conn.getresponse()
    if resp.status != 200 and resp.status != 302:
        print "Could not download images. Proceeding without."
        return
    fobj = open( dest+"/devnews_images.zip", 'w' )
    fobj.write( resp.read() )
    fobj.close()

... the zip file gets created but it's not a valid .zip (although it does appear to be a binary file). It's A little larger than the original zip.

Anyone konw if I have to do anything special? I don't see any options for binary mode transfers, but then I thought HTTP was text-only?

Thanks,

Antun

May 25th, 2004, 04:34 PM

karlovac

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Never mind! I had to tell the open function that it was a binary file:

Code:

fobj = open(dest+"/devnews_images.zip", 'wb')

May 25th, 2004, 06:00 PM

DevCoach

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you opened the local file (fobj) in text mode, so I am guessing that the file became corrupted when you saved it to disk.

Change it to

Code:

fobj = open( dest+"/devnews_images.zip", 'wb' )

and see if that makes any difference.

Alternatively use the urllib.urlretrieve function, which will handle everything for you.

Dave - The Developers' Coach

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