import the StoppingCriteria class from the transformers package
You can import the `StoppingCriteria` class from the `transformers` package in Python by using the following code: ``` from transformers import StoppingCriteria ``` This will import the `StoppingCriteria` class from the `transformers` package and make it available for use in your code. You can then use the `StoppingCriteria` class to define a stopping criterion for your optimization algorithm. For example: ``` from transformers import StoppingCriteria # Define a stopping criterion stopping_criterion = StoppingCriteria(max_iterations=1000, tolerance=1e-6) # Use the stopping criterion in your optimization algorithm optimizer = MyOptimizer(stopping_criterion=stopping_criterion) ``` This will define a stopping criterion that stops the optimization algorithm after 1000 iterations or when the objective function value is within 1e-6 of the optimal value. You can then use this stopping criterion in your optimization algorithm by passing it to the `MyOptimizer` constructor.