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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 _splpy_all_ports_ready(callable_):
 """Call all_ports_ready for a primitive operator."""

    if hasattr(type(callable_), 'all_ports_ready'):
        try:
            return callable_.all_ports_ready()
        except:
            ei = sys.exc_info()
            if streamsx._streams._runtime._call_exit(callable_, ei):
                return None
            raise e1[1]
    return None