torch.optim.Optimizer.step

Optimizer.step(closure: None = None) → None

Optimizer.step(closure: Callable[[], float]) → float

Performs a single optimization step (parameter update).

Parameters

closure (Callable) – A closure that reevaluates the model and returns the loss. Optional for most optimizers.

Note

Unless otherwise specified, this function should not modify the .grad field of the parameters.