freeze_support() issue

[bobstone94]

Anyone know how to fix this issue?

RuntimeError:
An attempt has been made to start a new process before the
current process has finished its bootstrapping phase.

    This probably means that you are not using fork to start your
    child processes and you have forgotten to use the proper idiom
    in the main module:

        if __name__ == '__main__':
            freeze_support()
            ...

    The "freeze_support()" line can be omitted if the program
    is not going to be frozen to produce an executable.

[max-mauermann]

Have you found a solution for this? I am having the same Issue.
Are you running this on Windows?
I am not sure if this is supposed to run on Windows, because according to this: https://stackoverflow.com/questions/18204782/runtimeerror-on-windows-trying-python-multiprocessing
"On Windows the subprocesses will import (i.e. execute) the main module at start", which is messing with the rest of the code.

It is working without multiprocessing (you will need to change the code at the end), but this will be extremely slow, which may be ok for small datasets.

[LucFrachon]

Hi @bobstone94 and @max-mauermann
I found a workaround to this problem. I simply execute the code in the Ubuntu Bash for Windows terminal (it ships with Windows 10). See this link for instance for instructions.
From the Ubuntu Bash, install matplotlib, numpy and requests using pip.
Then navigate to /mnt/<drive_letter>/<folder_path> where you downloaded the ImageNet Downloader (this repo) and execute from there. It works with multiprocessing.

[max-mauermann]

That's actually a nice solution, thanks.
I solved it by rewriting the code to run under windows and it seems to work.

[skaldek]

Fixed in my fork. If suddenly someone else needs it.

[ILYSHI]

Fixed in my fork. If suddenly someone else needs it.

It only creates folders with no images inside.

[ILYSHI]

Same problem on Mac OS

[rickkk856]

Fixed in my fork. If suddenly someone else needs it.

IF you gitclone this repo and change line 39 in downloader.py to:
return f'http://www.image-net.org/api/imagenet.synset.geturls?wnid={wnid}'

It will work on windows

[skaldek]

@rickkk856, merged your changes.

[tsbhun98]

@skaldek your solution saved me from a lot of trouble. Thank you.