better zipfiles, do not fail if imdb does not return

scrapeit/imdb.py

@@ -390,12 +390,14 @@ def guess(title, director=''):
     if url.startswith('http://www.imdb.com/title/tt'):
       return url[28:35]
       
+  try:
     req = urllib2.Request(imdb_url, None, utils.DEFAULT_HEADERS)
     u = urllib2.urlopen(req)
     data = u.read()
     return_url = u.url
     u.close()
-
+  except:
+    return None
   if return_url.startswith('http://www.imdb.com/title/tt'):
     return return_url[28:35]
   if data: 

scrapeit/opensubtitles.py

@@ -24,10 +24,13 @@ def getZipFileLink(opensubtitle_id):
   return "http://www.opensubtitles.org/en/download/sub/%s" % opensubtitle_id
 
 def downloadSubtitle(zip_link):
+  return extractSubtitles(read_url(zip_link))
+
+def extractSubtitles(zip_data):
   srts ={}
-  zip = StringIO.StringIO()
-  zip.write(read_url(zip_link))
-  zfile = zipfile.ZipFile(zip)
+  z = StringIO.StringIO()
+  z.write(zip_data)
+  zfile = zipfile.ZipFile(z)
   files = zfile.namelist()
   def is_not_nfo(file): return not file.endswith('nfo')
   files = filter(is_not_nfo, files)