torch.utils.data.DataLoader是pytorch提供的数据加载类，初始化函数如下：
torch.utils.data.DataLoader(dataset,batch_size=1, shuffle=False, sampler=None,batch_sampler=None, num_workers=0, collate_fn=<function default_collate>,pin_memory=False, drop_last=False, timeout=0, worker_init_fn=None)
标签：None,torch,utils,dataloader,collate,data,fn From： https://www.cnblogs.com/zjuhaohaoxuexi/p/16758553.html