Multiprocessing spawn processes with the same __name__

[AGPX]

I have a code that use the multiprocessing module to spawn new processes like this:

...
ctx = multiprocessing.get_context('spawn')
process = ctx.Process(target=_worker, args=args, daemon=True)
process.start()
...

I have to distinguish them from the main execution, through the code:

if __name__ == '__main__':
...

If I run this script from command line (running Python.exe), the __name__ is different for each process. When I run it through the py::exec, the __name__ is always __main__. How can I overcome this issue? Thanks.

[Skylion007]

We need to set the __name__ variable in the global dict differently in subprocess for py:exec for this to work properly.

[ArthurDeleu]

Hey, i'm bumping into this same issue, is there any fix yet? Is it possible to manuelly set the __name__upon creation of the CHild Process within the python process called through pybind? @Skylion007 @rwgk

[rwgk]

Hey, i'm bumping into this same issue, is there any fix yet? Is it possible to manuelly set the __name__upon creation of the CHild Process within the python process called through pybind? @Skylion007 @rwgk

Could someone please send a PR with a test (that fails)? — That will be the best starting point, to fully define what the problem is, and to try out fixes.

[aaraney]

@rwgk, for sure! Just opened #5238.