pycharm多进程代码没错但解释器报错问题求解
# 1. 导入进程包import multiprocessing
import time
# 跳舞任务
def dance():
for i in range(3):
print("跳舞中...")
time.sleep(0.2)
# 唱歌任务
def sing():
for i in range(3):
print("唱歌中...")
time.sleep(0.2)
dance_process = multiprocessing.Process(target=dance)
sing_process = multiprocessing.Process(target=sing)
# 3. 启动进程执行对应的任务
dance_process.start()
sing_process.start()
报错信息：C:\Users\wzb\AppData\Local\Programs\Python\Python38\python.exe C:/Users/wzb/PycharmProjects/pythonProject1/1.py
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 116, in spawn_main
exitcode = _main(fd, parent_sentinel)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 125, in _main
prepare(preparation_data)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 236, in prepare
_fixup_main_from_path(data['init_main_from_path'])
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 287, in _fixup_main_from_path
main_content = runpy.run_path(main_path,
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 265, in run_path
return _run_module_code(code, init_globals, run_name,
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 97, in _run_module_code
_run_code(code, mod_globals, init_globals,
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 87, in _run_code
exec(code, run_globals)
File "C:\Users\wzb\PycharmProjects\pythonProject1\1.py", line 28, in <module>
dance_process.start()
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\process.py", line 121, in start
self._popen = self._Popen(self)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\context.py", line 224, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\context.py", line 327, in _Popen
return Popen(process_obj)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\popen_spawn_win32.py", line 45, in __init__
prep_data = spawn.get_preparation_data(process_obj._name)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 154, in get_preparation_data
_check_not_importing_main()
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\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 "<string>", line 1, in <module>
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 116, in spawn_main
exitcode = _main(fd, parent_sentinel)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 125, in _main
prepare(preparation_data)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 236, in prepare
_fixup_main_from_path(data['init_main_from_path'])
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 287, in _fixup_main_from_path
main_content = runpy.run_path(main_path,
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 265, in run_path
return _run_module_code(code, init_globals, run_name,
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 97, in _run_module_code
_run_code(code, mod_globals, init_globals,
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 87, in _run_code
exec(code, run_globals)
File "C:\Users\wzb\PycharmProjects\pythonProject1\1.py", line 28, in <module>
dance_process.start()
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\process.py", line 121, in start
self._popen = self._Popen(self)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\context.py", line 224, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\context.py", line 327, in _Popen
return Popen(process_obj)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\popen_spawn_win32.py", line 45, in __init__
prep_data = spawn.get_preparation_data(process_obj._name)
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\multiprocessing\spawn.py", line 154, in get_preparation_data
_check_not_importing_main()
File "C:\Users\wzb\AppData\Local\Programs\Python\Python38\lib\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.
我用py3.8和py3.9都试了试，都不行，解释器也没报错，pycharm重装了好几遍，都不行{:10_277:} 求帮助 # 1. 导入进程包
import multiprocessing
import time
# 跳舞任务
def dance():
for i in range(3):
print("跳舞中...")
time.sleep(0.2)
# 唱歌任务
def sing():
for i in range(3):
print("唱歌中...")
time.sleep(0.2)
dance_process = multiprocessing.Process(target=dance)
sing_process = multiprocessing.Process(target=sing)
if __name__ == '__main__':
# 3. 启动进程执行对应的任务
dance_process.start()
sing_process.start()
试试这个 向日葵号发来，我给你看 rsj0315 发表于 2021-7-8 13:37
试试这个
老哥厉害啊{:10_340:}
页:
[1]