def local_channel(obj):
return _ec.local_channel(_get_opc(obj))<EOL>
Return the parallel region local channel number `obj` is executing in.

The channel number is in the range of zero to ``local_max_channel(obj)``.

Args:
    obj: Instance of a class executing within Streams.

Returns:
    int: Parallel region local channel number or -1 if not located in a parallel region.