This is my main.py:

import torchvision
input("Press key")

It runs correctly in the command line: python main.py

I need an executable for windows. So I did : pyinstaller main.py

But when I launched the main.exe, inside /dist/main I got this error:

Traceback (most recent call last):File "main.py", line 1, in <module>... (omitted)File "site-packages\torchvision\ops\misc.py", line 135, in <module>File "site-packages\torchvision\ops\misc.py", line 148, in FrozenBatchNorm2dFile "site-packages\torch\jit\__init__.py", line 850, in script_methodFile "site-packages\torch\jit\frontend.py", line 152, in get_jit_defFile "inspect.py", line 973, in getsourceFile "inspect.py", line 955, in getsourcelinesFile "inspect.py", line 786, in findsource
OSError: could not get source code
[2836] Failed to execute script main

It seems that some source code is not correctly imported from pyinstaller. I am not sure if the problems is the torch module or torchvision.

Additional info:

• I recently installed Visual Studio 2019

System info:

• Window 10
• Python 3.7
• torch-1.1.0
• torchvision-0.3.0

[EDIT]

I found that the problem is in the definition of the class FrozenBatchNorm2d inside torchvision. The following script produce the same error as the one before posted:

main.py

import torchclass FrozenBatchNorm2d(torch.jit.ScriptModule):def __init__(self, n):super(FrozenBatchNorm2d, self).__init__()@torch.jit.script_methoddef forward(self):pass

I copied all the torch source file. But I still got the error...

Downgrade torchvision to the previous version fix the error.

pip uninstall torchvision
pip install torchvision==0.2.2.post3