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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(self, input_str):
 """Input str to features dict, ready for inference."""

    inputs = self.encoders["inputs"].encode(input_str) + [EOS_ID]
    batch_inputs = np.reshape(inputs, [1, -1, 1, 1])  # Make it 3D.
    return batch_inputs