AttributeError: Can‘t get attribute ‘SPPF‘ on ＜module ‘models.common‘ from ‘H:\\yolov5-5.0\\models\\

yolo reports an error

Solution: Find the SPPF class in model/common.py, copy it into your model/common.py of Tags5, so that your code also has this class, and you need to introduce a warnings package. !

Some students can't find the SPPF class, so I will paste it directly here, you just need to copy it into your common.py, remember to put the import warnings on it:

import warnings
class SPPF(nn.Module):
    # Spatial Pyramid Pooling - Fast (SPPF) layer for YOLOv5 by Glenn Jocher
    def __init__(self, c1, c2, k=5):  # equivalent to SPP(k=(5, 9, 13))
        super().__init__()
        c_ = c1 // 2  # hidden channels
        self.cv1 = Conv(c1, c_, 1, 1)
        self.cv2 = Conv(c_ * 4, c2, 1, 1)
        self.m = nn.MaxPool2d(kernel_size=k, stride=1, padding=k // 2)
 
    def forward(self, x):
        x = self.cv1(x)
        with warnings.catch_warnings():
            warnings.simplefilter('ignore')  # suppress torch 1.9.0 max_pool2d() warning
            y1 = self.m(x)
            y2 = self.m(y1)
            return self.cv2(torch.cat([x, y1, y2, self.m(y2)], 1))