class Model:
    def __init__(self, **kwargs):
        self._model = None

    def load(self):
        pass

    def predict(self, model_input):
        return model_input
Once your model server has finished deploying, you can call it from your terminal.

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Call the model server

Model server input must be JSON-serializable: a string, number, list, or dictionary.
Note the double quotes to make the data parameter a string.truss predict uses the same data formatting on the as cURL.
Invocation 
truss predict -d '"Truss is awesome!"'
Response 
"Truss is awesome!"
Our model server is up and responding to requests. In the next step, we’ll set up the last piece of the developer loop on Truss. 
class Model:
    def __init__(self, **kwargs):
        self._model = None

    def load(self):
        pass

    def predict(self, model_input):
        return model_input