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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_params(self):
 """Initialize parameters in the KVStore. Parameters with incomplete initialization are ignored. """

        assert self._kv_initialized, "Cannot initialize parameters in KVStore " \
                                     "when KVStore is not initialized."
        params_to_init = []
        if self._kvstore:
            for param in self._params_to_init:
                if param._deferred_init:
                    params_to_init.append(param)
                else:
                    param_arrays = param._check_and_get(param._data, list)
                    idx = self._param2idx[param.name]
                    self._kvstore.init(idx, param_arrays[0])
                    if param._stype == 'default':
                        self._kvstore.pull(idx, param_arrays, priority=-idx)

        self._params_to_init = params_to_init