Issue 4382 - Use new syntax to catch exceptions in cms

cms/bin/generate_static_pages.py

 # This file is part of the Adblock Plus web scripts,
 # Copyright (C) 2006-2016 Eyeo GmbH
 #
 # Adblock Plus is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
 # published by the Free Software Foundation.
 #
 # Adblock Plus is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
@@ skipping 39 matching lines @@
             return
         known_files.add(outfile)
 
         if os.path.exists(outfile):
             with codecs.open(outfile, 'rb', encoding=encoding) as handle:
                 if handle.read() == contents:
                     return
 
         try:
             os.makedirs(os.path.dirname(outfile))
-        except OSError, e:
+        except OSError as e:
             if e.errno != errno.EEXIST:
                 raise
 
         with codecs.open(outfile, 'wb', encoding=encoding) as handle:
             handle.write(contents)
 
     with MercurialSource(repo) as source:
         # Cache the result for some functions - we can assume here that the data
         # never changes
         source.resolve_link = memoize(source.resolve_link)
@@ skipping 72 matching lines @@
                     os.rmdir(path)
     remove_unknown(output_dir)
 
 if __name__ == '__main__':
     if len(sys.argv) < 3:
         print >>sys.stderr, 'Usage: %s source_repository output_dir' % sys.argv[0]
         sys.exit(1)
 
     repo, output_dir = sys.argv[1:3]
     generate_pages(repo, output_dir)