GUB cannot run tests

[Graham Percival]

Is this a python 2.5+ism?  GUB only uses python 2.4.
Please revert or rewrite in a python 2.4 manner.


-release-unstable/scripts/build/output-distance.py", line 317
    return float(s) if 'nan' not in s else float(s.split('.')[0])
                     ^
SyntaxError: invalid syntax
Traceback (most recent call last):
  File "test-lily/rsync-test.py", line 204, in ?
    main ()
  File "test-lily/rsync-test.py", line 198, in main
    compare_test_info (options)
  File "test-lily/rsync-test.py", line 169, in compare_test_info
    compare_test_tarballs (options, versions_found[-3:])
  File "test-lily/rsync-test.py", line 119, in
compare_test_tarballs
    system (cmd)
  File "test-lily/rsync-test.py", line 77, in system
    raise Exception ('fail')


Cheers,
- Graham