编写一个函数来列出所有可能的模型组合

def list_model_combinations(models, current_combination=[], all_combinations=[]):
    if len(models) == 0:
        all_combinations.append(current_combination)
        return

    for model in models[0]:
        list_model_combinations(models[1:], current_combination + [model], all_combinations)

    return all_combinations

models = [
    ['model1', 'model2'],
    ['option1', 'option2', 'option3'],
    ['variant1', 'variant2']
]

combinations = list_model_combinations(models)
for combination in combinations:
    print(combination)

['model1', 'option1', 'variant1']
['model1', 'option1', 'variant2']
['model1', 'option2', 'variant1']
['model1', 'option2', 'variant2']
['model1', 'option3', 'variant1']
['model1', 'option3', 'variant2']
['model2', 'option1', 'variant1']
['model2', 'option1', 'variant2']
['model2', 'option2', 'variant1']
['model2', 'option2', 'variant2']
['model2', 'option3', 'variant1']
['model2', 'option3', 'variant2']