import torch
import torchvision
from torch import nn

# Function for ResNet18.
def create_resnet():
  weights = torchvision.models.ResNet18_Weights.DEFAULT
  transforms = weights.transforms()
  model = torchvision.models.resnet18(weights = weights)
  for param in model.parameters():
    param.requires_grad = False
  model.fc = nn.Linear(in_features=512, out_features=1, bias=True)
  return model