@chuanchang Actually @liyangfnst is correct, the project is standardized on python 2.4 syntax which doesn't support ``try...except...finally`` (as much as we would like it to).  Even if test module will only ever be run on modern system, our tooling will break when examining tests on systems with only python 2.4 :(  If you spot this in other areas, it is a bug we must fix.

These are the only supported constructs in 2.4 syntax:

     try...except...
     try...finally...
     try...except...else...
     try...finally...else...