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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 _write_config(self, memory):
 """Write the configuration for this probe to memory."""

        memory.seek(0)
        memory.write(struct.pack("<II",
                                 # sim_length
                                 self._simulator.length,
                                 # input_key
                                 self._input.routing_key
                                 if self._input is not None
                                 else 0xFFFFFFFF))