Python atexit function is not called on Spyder IDE

Question

I'm working on Spyder IDE, version 3.0.0. My python version is 2.7.12. For some reason, the atexit mechanism doesn't work on this particular IDE.

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Code

import atexit

def done():
    print '2'

atexit.register(done)
print '1'

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Result

When I run the script in PyCharm or from Windows cmd, it prints:

1
2

When I run it from Spyder, done function is not being called, and 2 is not printed. The final result is:

1

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Does someone knows why is that and how can I fix it?

Thanks!

Answer 1

If you need to use atexit.register(), you can call atexit._run_exitfuncs, as in answer:

https://stackoverflow.com/a/21634308/6669602

(Or you can restart the kernel)