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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 encode_tf(self, s):
 """Encode a tf.Scalar string to a tf.Tensor. This will be necessary for on-the-fly tokenization. Args: s: a tf.Scalar with dtype tf.string Returns: a 1d tf.Tensor with dtype tf.int32 """

    ids = subword_text_encoder_ops.subword_text_encoder_encode(
        s, self._filepath)
    # the c++ op apppends 1=EOS - drop it.
    return ids[:-1]