FIT for Python 无法在 MacOS 上运行 #94
Description
当前 FIT for Python 在 Windows 上运行没有问题，但是在 MacOS 上运行会发生报错：
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/Users/jiyujie/miniconda3/lib/python3.10/multiprocessing/spawn.py", line 116, in spawn_main
exitcode = _main(fd, parent_sentinel)
File "/Users/jiyujie/miniconda3/lib/python3.10/multiprocessing/spawn.py", line 126, in _main
self = reduction.pickle.load(from_parent)
File "/Users/jiyujie/projects/github/fit-framework/framework/fit/python/fitframework/__init__.py", line 220, in <module>
main_process.start()
File "/Users/jiyujie/miniconda3/lib/python3.10/multiprocessing/process.py", line 121, in start
self._popen = self._Popen(self)
File "/Users/jiyujie/miniconda3/lib/python3.10/multiprocessing/context.py", line 224, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "/Users/jiyujie/miniconda3/lib/python3.10/multiprocessing/context.py", line 288, in _Popen
return Popen(process_obj)
File "/Users/jiyujie/miniconda3/lib/python3.10/multiprocessing/popen_spawn_posix.py", line 32, in __init__
super().__init__(process_obj)
File "/Users/jiyujie/miniconda3/lib/python3.10/multiprocessing/popen_fork.py", line 19, in __init__
self._launch(process_obj)
File "/Users/jiyujie/miniconda3/lib/python3.10/multiprocessing/popen_spawn_posix.py", line 42, in _launch
prep_data = spawn.get_preparation_data(process_obj._name)
File "/Users/jiyujie/miniconda3/lib/python3.10/multiprocessing/spawn.py", line 154, in get_preparation_data
_check_not_importing_main()
File "/Users/jiyujie/miniconda3/lib/python3.10/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.