Question

I’m working on a script that will automatically update an installed version of Calibre. Currently I have it downloading the latest portable version. I seem to be having trouble saving the zipfile. Currently my code is:

import urllib2
import re
import zipfile

#tell the user what is happening
print("Calibre is Updating")

#download the page
url = urllib2.urlopen ( "http://sourceforge.net/projects/calibre/files" ).read()

#determin current version
result = re.search('title="/[0-9.]*/([a-zA-Z\-]*-[0-9\.]*)', url).groups()[0][:-1]

#download file
download = "http://status.calibre-ebook.com/dist/portable/" + result
urllib2.urlopen( download )

#save
output = open('install.zip', 'w')
output.write(zipfile.ZipFile("install.zip", ""))
output.close()

Answer 1

You don’t need to use zipfile.ZipFile for this (and the way you’re using it, as well as urllib2.urlopen, has problems as well). Instead, you need to save the urlopen result in a variable, then read it and write that output to a .zip file. Try this code:

#download file
download = "http://status.calibre-ebook.com/dist/portable/" + result
request = urllib2.urlopen( download )

#save
output = open("install.zip", "w")
output.write(request.read())
output.close()