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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def main(args=None):
 """ Performs an action against a Streaming Analytics service. """

    streamsx._streams._version._mismatch_check('streamsx.topology.context')
    try:
        sr = run_cmd(args)
        sr['return_code'] = 0
    except:
        sr = {'return_code':1, 'error': sys.exc_info()}
    return sr