Python IDLE模式下采用multiprocessing 子进程无法输出

Well, IDLE is a strange thing. In order to "capture" everything what you write using

print

statements or

sys.stdout.write

, IDLE "overrides"

sys.stdout

and replaces it with an object that passes everything back to IDLE so it can print it. I guess when you are starting a new process from

multiprocessing

, this hackery is not inherited by the child process, therefore you don't see anything in IDLE. But I'm just guessing here, I don't have a Windows machine at the moment to check it. – Tamás May 6 '10 at 9:10