freeze_support

[AmarRGill]

I have been trying to run zap on two muse cubes.

Both are resulting in the same error below.

I have downloaded the most recent version of the zap.py file from this repository.

Any help with what a should try to resolve the issue?

Thanks,
Amar

[INFO] Running ZAP 2.1 !
[INFO] Zeroing slices with only NaNs
[INFO] Cleaning NaN values in the cube
[INFO] Rejected 6732 spaxels with more than 25.0% NaN pixels
[INFO] Fixing 476171 remaining NaN pixels
/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py:1100: RuntimeWarning: Mean of empty slice
cleancube[z, y, x] = np.nanmean(neighbor, axis=1)
[INFO] _nanclean - Time: 4.07 sec.
[INFO] Extract to 2D, 93642 valid spaxels (93%)
[INFO] _extract - Time: 6.57 sec.
[INFO] Median zlevel subtraction
[INFO] Running ZAP 2.1 !
[INFO] Zeroing slices with only NaNs
[INFO] Cleaning NaN values in the cube
[INFO] Rejected 6732 spaxels with more than 25.0% NaN pixels
[INFO] Fixing 476171 remaining NaN pixels
/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py:1100: RuntimeWarning: Mean of empty slice
cleancube[z, y, x] = np.nanmean(neighbor, axis=1)
[INFO] _nanclean - Time: 5.55 sec.
[INFO] Extract to 2D, 93642 valid spaxels (93%)
[INFO] _extract - Time: 6.01 sec.
[INFO] Median zlevel subtraction
Traceback (most recent call last):
File "", line 1, in
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/spawn.py", line 116, in spawn_main
exitcode = _main(fd, parent_sentinel)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/spawn.py", line 125, in _main
prepare(preparation_data)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/spawn.py", line 236, in prepare
_fixup_main_from_path(data['init_main_from_path'])
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/spawn.py", line 287, in _fixup_main_from_path
main_content = runpy.run_path(main_path,
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/runpy.py", line 268, in run_path
return _run_module_code(code, init_globals, run_name,
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/runpy.py", line 97, in _run_module_code
_run_code(code, mod_globals, init_globals,
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/runpy.py", line 87, in _run_code
exec(code, run_globals)
File "/Users/amarrambukwella-gill/Documents/University/PhD/Year1/Muse-zap.py", line 11, in
zap.process('/Users/amarrambukwella-gill/Downloads/ADP.fits', outcubefits='/Users/amarrambukwella-gill/Downloads/ADP-zap.fits')
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 185, in process
zobj._run(clean=clean, zlevel=zlevel, cfwidth=cfwidthSP, cftype=cftype,
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 507, in _run
self._prepare(clean=clean, zlevel=zlevel, cftype=cftype,
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 291, in wrapped
res = func(*args, **kwargs)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 482, in _prepare
self._zlevel(calctype=zlevel)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 291, in wrapped
res = func(*args, **kwargs)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 606, in _zlevel
self.zlsky = np.hstack(parallel_map(func, self.stack, NCPU, axis=0))
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 916, in parallel_map
manager = Manager()
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/context.py", line 57, in Manager
m.start()
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/managers.py", line 554, in start
self._process.start()
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/process.py", line 121, in start
self._popen = self._Popen(self)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/context.py", line 284, in _Popen
return Popen(process_obj)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/popen_spawn_posix.py", line 32, in init
super().init(process_obj)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/popen_fork.py", line 19, in init
self._launch(process_obj)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/popen_spawn_posix.py", line 42, in _launch
prep_data = spawn.get_preparation_data(process_obj._name)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/spawn.py", line 154, in get_preparation_data
_check_not_importing_main()
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/spawn.py", line 134, in _check_not_importing_main
raise RuntimeError('''
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.

Traceback (most recent call last):
File "/Users/amarrambukwella-gill/Documents/University/PhD/Year1/Muse-zap.py", line 11, in
zap.process('/Users/amarrambukwella-gill/Downloads/ADP.fits', outcubefits='/Users/amarrambukwella-gill/Downloads/ADP-zap.fits')
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 185, in process
zobj._run(clean=clean, zlevel=zlevel, cfwidth=cfwidthSP, cftype=cftype,
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 507, in _run
self._prepare(clean=clean, zlevel=zlevel, cftype=cftype,
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 291, in wrapped
res = func(*args, **kwargs)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 482, in _prepare
self._zlevel(calctype=zlevel)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 291, in wrapped
res = func(*args, **kwargs)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 606, in _zlevel
self.zlsky = np.hstack(parallel_map(func, self.stack, NCPU, axis=0))
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/site-packages/zap/zap.py", line 916, in parallel_map
manager = Manager()
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/context.py", line 57, in Manager
m.start()
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/managers.py", line 558, in start
self._address = reader.recv()
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/connection.py", line 255, in recv
buf = self._recv_bytes()
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/connection.py", line 419, in _recv_bytes
buf = self._recv(4)
File "/Users/amarrambukwella-gill/opt/anaconda3/lib/python3.9/multiprocessing/connection.py", line 388, in _recv
raise EOFError
EOFError