Traceback (most recent call last):

  File "<string>", line 1, in <module>

  File "C:\Python36\lib\multiprocessing\spawn.py", line 105, in spawn_main

    exitcode = _main(fd)

  File "C:\Python36\lib\multiprocessing\spawn.py", line 114, in _main

    prepare(preparation_data)

  File "C:\Python36\lib\multiprocessing\spawn.py", line 225, in prepare

    _fixup_main_from_path(data['init_main_from_path'])

  File "C:\Python36\lib\multiprocessing\spawn.py", line 277, in _fixup_main_from_path

Traceback (most recent call last):

  File "<string>", line 1, in <module>

  File "C:\Python36\lib\multiprocessing\spawn.py", line 105, in spawn_main

    exitcode = _main(fd)

  File "C:\Python36\lib\multiprocessing\spawn.py", line 114, in _main

    prepare(preparation_data)

  File "C:\Python36\lib\multiprocessing\spawn.py", line 225, in prepare

    _fixup_main_from_path(data['init_main_from_path'])

    run_name="__mp_main__")

  File "C:\Python36\lib\runpy.py", line 263, in run_path

    pkg_name=pkg_name, script_name=fname)

  File "C:\Python36\lib\runpy.py", line 96, in _run_module_code

    mod_name, mod_spec, pkg_name, script_name)

  File "C:\Python36\lib\runpy.py", line 85, in _run_code

    exec(code, run_globals)

  File "C:\Users\w5659\Desktop\进程池遗留\test2.py", line 6, in <module>

    pool = multiprocessing.Pool(5)

  File "C:\Python36\lib\multiprocessing\context.py", line 119, in Pool

    context=self.get_context())

  File "C:\Python36\lib\multiprocessing\pool.py", line 174, in __init__

    self._repopulate_pool()

  File "C:\Python36\lib\multiprocessing\pool.py", line 239, in _repopulate_pool

    w.start()

  File "C:\Python36\lib\multiprocessing\process.py", line 105, in start

    self._popen = self._Popen(self)

  File "C:\Python36\lib\multiprocessing\context.py", line 322, in _Popen

    return Popen(process_obj)

  File "C:\Python36\lib\multiprocessing\popen_spawn_win32.py", line 33, in __init__

    prep_data = spawn.get_preparation_data(process_obj._name)

  File "C:\Python36\lib\multiprocessing\spawn.py", line 143, in get_preparation_data

    _check_not_importing_main()

  File "C:\Python36\lib\multiprocessing\spawn.py", line 136, in _check_not_importing_main

    is not going to be frozen to produce an executable.''')

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.