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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 _init_state(self, initial_state: Union[int, np.ndarray]):
 """Initializes a the shard wavefunction and sets the initial state."""

        state = np.reshape(
            sim.to_valid_state_vector(initial_state, self._num_qubits),
            (self._num_shards, self._shard_size))
        state_handle = mem_manager.SharedMemManager.create_array(
            state.view(dtype=np.float32))
        self._shared_mem_dict['state_handle'] = state_handle