关于线程调用以及正则化

没看懂，明天再记录一下

今天学习关于线程和正则化，但是完全按照博客上编程，结果却出现了错误，关于错误，我也没看懂，记录一下吧。、

from multiprocessing import Process
import os
def run_proc(name):
 print('Run child priocess %s (%s)....' % (name,os.getpid()))
if __name__=__main__:
 print('Parent process %s.' % os.getpid())
 p = Process(target=run_proc,args=('test',))
 print('Child process will start.')
 p.start()
 p.join()
 print('Child process end.')

调用ipython ,确出现了以下错误。

%run E:\lenovo\duoxiancheng.py
Parent process 5112.
Child process will start.
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
E:\lenovo\duoxiancheng.py in <module>()
      7         p = Process(target=run_proc,args=('test',))
      8         print('Child process will start.')
----> 9         p.start()
     10         p.join()
     11         print('Child process end.')

C:\Users\lenovo\Anaconda3\lib\multiprocessing\process.py in start(self)
    103                'daemonic processes are not allowed to have children'
    104         _cleanup()
--> 105         self._popen = self._Popen(self)
    106         self._sentinel = self._popen.sentinel
    107         _children.add(self)

C:\Users\lenovo\Anaconda3\lib\multiprocessing\context.py in _Popen(process_obj)
    210     @staticmethod
    211     def _Popen(process_obj):
--> 212         return _default_context.get_context().Process._Popen(process_obj)
    213
    214 class DefaultContext(BaseContext):

C:\Users\lenovo\Anaconda3\lib\multiprocessing\context.py in _Popen(process_obj)
    311         def _Popen(process_obj):
    312             from .popen_spawn_win32 import Popen
--> 313             return Popen(process_obj)
    314
    315     class SpawnContext(BaseContext):

C:\Users\lenovo\Anaconda3\lib\multiprocessing\popen_spawn_win32.py in __init__(self, process_obj)
     32
     33     def __init__(self, process_obj):
---> 34         prep_data = spawn.get_preparation_data(process_obj._name)
     35
     36         # read end of pipe will be "stolen" by the child process

C:\Users\lenovo\Anaconda3\lib\multiprocessing\spawn.py in get_preparation_data(name)
    171     # or through direct execution (or to leave it alone entirely)
    172     main_module = sys.modules['__main__']
--> 173     main_mod_name = getattr(main_module.__spec__, "name", None)
    174     if main_mod_name is not None:
    175         d['init_main_from_name'] = main_mod_name

AttributeError: module '__main__' has no attribute '__spec__'

（main函数没有这样的属性，那么我应该如何修改呢，还没有想法，线记录一下，以后再说）