def _splpy_primitive_input_fns(obj):
ofns = list()<EOL>for fn in obj._splpy_input_ports:<EOL><INDENT>ofns.append(getattr(obj, fn.__name__))<EOL><DEDENT>return ofns<EOL>
Convert the list of class input functions to be
        instance functions against obj.
        Used by @spl.primitive_operator SPL cpp template.