试了改过各种变量名，一直有这个报错，有人知道为什么吗？

Traceback (most recent call last):

  File "E:/PythonProject/venv/Study1/2_1_test.py", line 60, in <module>

    out = net(input_data)

  File "E:\WorkTools\Anaconda\envs\renzhe\lib\site-packages\torch\nn\modules\module.py", line 532, in __call__

    result = self.forward(*input, **kwargs)

  File "E:/PythonProject/venv/Study1/2_1_test.py", line 29, in forward

    x = self.conv1(x)

  File "E:\WorkTools\Anaconda\envs\renzhe\lib\site-packages\torch\nn\modules\module.py", line 576, in __getattr__

    type(self).__name__, name))

AttributeError: 'Net' object has no attribute 'conv1'

Process finished with exit code 1