您可以使用 getattr 函数:

You can use the getattr function:

import torchvision

model_name = 'resnet18'
model = getattr(torchvision.models, model_name)(pretrained=configs.use_trained_models)

这基本上与点符号相同，只是在函数形式中接受字符串来检索属性/方法.

This essentially is along the lines the same as the dot notation just in function form accepting a string to retrieve the attribute/method.