【pytorch】pytorch读模型打印参数

下面的代码包含用途有：

1.训练时多GPU，推理时所有层多出一个module时替换；

2.训练模型出现层的定义不一致时替换；

3.打印训练过程中学习的参数，可视化对应参数的值。

import torch
from collections import OrderedDict
from your_model import Net

# your net architecture
net = Net()
model_path = "your_model_path"

# load model parameters
state_dict = torch.load(model_path, map_location="cpu")
# define a new dict
new_state_dict = OrderedDict()
for k,v in state_dict.items():
    # if you train model with mutil gpu
    if "module" in k:
        name = k[7:]
    else:
        name = k
    # if some layer's name need to change
    if "fc" in name:
        name = name.replace("fc", "classifier")
    # print your layer params
    print("layer : {}, value : {}\n\n".format(name, v))
    # store the value to new_state_dict
    new_state_dict[name] = v

# load model param to model architecture
net.load_state_dict(new_state_dict)