训练YOLOV3报错TypeError: not all arguments converted during string formatting

问题描述

pytorch下yolov3训练自己的数据集，报错：

Traceback (most recent call last):
File "train.py", line 431, in <module>
train(hyp)  # train normally
File "train.py", line 91, in train
model = Darknet(cfg).to(device)
File "C:\Users\pippy\Desktop\yolov3-master\models.py", line 226, in __init__
self.module_list, self.routs = create_modules(self.module_defs, img_size, cfg)
File "C:\Users\pippy\Desktop\yolov3-master\models.py", line 33, in create_modules
bias=not bn))
File "C:\Users\pippy\AppData\Roaming\Python\Python37\site-packages\torch\nn\modules\conv.py", line 332, in __init__
False, _pair(0), groups, bias, padding_mode)
File "C:\Users\pippy\AppData\Roaming\Python\Python37\site-packages\torch\nn\modules\conv.py", line 24, in __init__
if out_channels % groups != 0:
TypeError: not all arguments converted during string formatting

报错原因是求余符号两边得是数字（if out_channels % groups != 0），不知道别人为什么没有出现这个问题，原程序models.py中也确实没有int我们的groups，所以抱着试一试的心态添加了int,发现竟然可行，models.py中的修改部分如下（大约在源程序21-33行的位置）：

if mdef['type'] == 'convolutional':
bn = int(mdef['batch_normalize'])
filters = int(mdef['filters'])
k = int(mdef['size'])  # kernel size
stride = int(mdef['stride']) if 'stride' in mdef else (mdef['stride_y'], mdef['stride_x'])
if isinstance(k, int):  # single-size conv
modules.add_module('Conv2d',nn.Conv2d(in_channels=output_filters[-1],
out_channels=filters,
kernel_size=k,
stride=stride,
padding=k // 2 if mdef['pad'] else 0,
groups=int(mdef['groups']) if 'groups' in mdef else 1,
bias=not bn))