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多进程报错 #50
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可以试试这个补丁: 编译的版本在这里: try:
code = compile(text, PYSTAND_SCRIPT, 'exec')
exec(code, environ)
except:
import traceback, io
sio = io.StringIO()
traceback.print_exc(file = sio)
os.MessageBox(sio.getvalue(), 'Error') 这段代码本意是在 GUI 版本 AttachConsole 失败的情况下也能看到 Python 运行异常。但 try...except 同样会捕获到由: sys.exit(0) 或: raise SystemExit() 抛出的 重现该问题的 .int 脚本: import os
import sys
os.MessageBox('Hello, world!')
sys.exit(0) |
又想了一下: try:
code = compile(text, PYSTAND_SCRIPT, 'exec')
exec(code, environ)
except SystemExit:
pass
except:
import traceback, io
sio = io.StringIO()
traceback.print_exc(file = sio)
os.MessageBox(sio.getvalue(), 'Error') 太麻烦了。 try:
code = compile(text, PYSTAND_SCRIPT, 'exec')
exec(code, environ)
except Exception:
import traceback, io
sio = io.StringIO()
traceback.print_exc(file = sio)
os.MessageBox(sio.getvalue(), 'Error') 即可。因为: https://docs.python.org/3/library/exceptions.html
|
SystemExit inherits from BaseException instead of Exception.
@myd7349 受教。谢谢。 |
根据#21中@myd7349提供的方法,可以解决不会N个进程弹出N个GUI了。
![image](https://private-user-images.githubusercontent.com/17401091/253747765-644d7844-b451-4d22-b3b9-cbe7c6062275.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.Gvx8fB2wtU-oEF-sc94pFduLDg6LX7P8ep1hBivNZBM)
但是当子进程结束任务时,就会N个(pool数)下列错误,当确定后,主进程继续往下走。
多进程采用的进程池pool.apply_async的方式。
如果采用bat调用runtime\python.exe方式启动没有任何错误,采用pystand.exe方式启动就会有上述错误。
经过检查,子进程退出时将会跳转到muitlprocessing\spawn.py::spawn_main中执行sys.exit,从而引发截图Error。
========================
以下脚本将复现sys.exit(0)引起的Error:
查阅资料,sys.exit(0)会被捕捉,推荐使用os._exit(0),但在本例中就需要修改py自带的multiprocessing包了,不是太好。
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