RuntimeError: Given groups=1, weight of size 32 3 3 3, expected input[1, 4, 416, 416] to have 3 chan

·····运行eriklindernoren/PyTorch-YOLOv3，出现错误RuntimeError: Given groups=1, weight of size 32 3 3 3, expected input[1, 4, 416, 416] to have 3 channels, but got 4 channels instead

·····解决方法：
·····把img = transforms.ToTensor()(Image.open(img_path)）
改为：
img = transforms.ToTensor()(Image.open(img_path).convert(‘RGB’))