AttributeError: 'NoneType' object has no attribute 'cfg'

引用中提到的解决方案是在访问engine之前添加以下两行代码：last_layer = network.get_layer(network.num_layers - 1)和network.mark_output(last_layer.get_output(0))。这样可以确保所需的对象被正确赋值，避免出现'NoneType' object has no attribute 'cfg'的错误。中的代码中，如果没有找到匹配的元素，调用group()方法就会出错。因此，使用正则表达式匹配时，需要先检查是否成功匹配到了元素，再进行相应的操作。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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