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https://github.com/ets-labs/python-dependency-injector.git
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49 lines
1.1 KiB
Python
49 lines
1.1 KiB
Python
"""`Factory` providers - building a complex object graph with deep init injections example."""
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from dependency_injector import providers
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class Regularizer:
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def __init__(self, alpha):
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self.alpha = alpha
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class Loss:
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def __init__(self, regularizer):
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self.regularizer = regularizer
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class ClassificationTask:
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def __init__(self, loss):
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self.loss = loss
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class Algorithm:
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def __init__(self, task):
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self.task = task
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algorithm_factory = providers.Factory(
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Algorithm,
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task=providers.Factory(
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ClassificationTask,
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loss=providers.Factory(
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Loss,
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regularizer=providers.Factory(
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Regularizer,
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),
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),
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),
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)
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if __name__ == '__main__':
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algorithm_1 = algorithm_factory(task__loss__regularizer__alpha=0.5)
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assert algorithm_1.task.loss.regularizer.alpha == 0.5
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algorithm_2 = algorithm_factory(task__loss__regularizer__alpha=0.7)
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assert algorithm_2.task.loss.regularizer.alpha == 0.7
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algorithm_3 = algorithm_factory(task__loss__regularizer=Regularizer(alpha=0.8))
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assert algorithm_3.task.loss.regularizer.alpha == 0.8
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