def stream_in(prefix, stream):
	return {
		f'i_{prefix}_data': stream.data,
		f'i_{prefix}_valid': stream.valid,
		f'o_{prefix}_ready': stream.ready,
	}

def stream_out(prefix, stream):
	return {
		f'o_{prefix}_data': stream.data,
		f'o_{prefix}_valid': stream.valid,
		f'i_{prefix}_ready': stream.ready,
	}

foo = Stream()
bar = Stream()
baz = Stream()

Instance('module_with_many_streams',
	**stream_in('foo', foo),
	**stream_in('bar', bar),
	**stream_out('baz', baz),
)