对象不能序列化的问题

File "F:\Anaconda3.0\envs\chineseocr\lib\multiprocessing\popen_spawn_win32.py", line 65, in __init__
    reduction.dump(process_obj, to_child)
  File "F:\Anaconda3.0\envs\chineseocr\lib\multiprocessing\reduction.py", line 60, in dump
    ForkingPickler(file, protocol).dump(obj)
TypeError: can't pickle _thread.RLock objects

在torch.utils.data.DataLoader中设置num_workers=0或者配置文件中的多进程改为单进程

例如：
 

train_dataloader = torch.utils.data.DataLoader(train_dataset, num_workers=0)