Defaults

spock allows you to set defaults for parameters that are either not set from a configuration file or you no longer need to set (maybe you've finally settled on a standard or would like to fall back to defaults if the user does not know the correct/best parameter to choose). This is done in the spock class definition.

Setting Defaults

Say we want defaults for the hidden layer sizes and the activation function as well as add a new parameter with a default value.

Default values are simply set with the = operator

Let's modify the definition in: tutorial.py

from enum import Enumfrom spock import spockfrom typing import Listfrom typing import Optionalfrom typing import Tuple
class Activation(Enum):    relu = 'relu'    gelu = 'gelu'    tanh = 'tanh'

@spockclass ModelConfig:    lr: float = 0.01    n_features: int    dropout: List[float]    hidden_sizes: Tuple[int, int, int] = (32, 32, 32)    activation: Activation = 'relu'

We added a new parameter lr that has a default value of 0.01, and set defaults for hidden_sizes and activation. These values will be used if no values are specified in the configuration file and prevent spock from raising an Exception for required parameters.