def istraceback(object):
    return isinstance(object, types.TracebackType)
L{postApplication} should change the UID and GID to the values
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/inspect.py/istraceback--crossover with--dataset/ETHPy150Open twisted/twisted/twisted/test/test_twistd.py/ApplicationRunnerTests.test_applicationStartsWithConfiguredNumericIDs