python不会创建线程？

Question

I might be missing something silly, but ive ran my code in pythonwin and it works, but when I run it in command-line it freaks

import time, thread
def print_t(name, delay):
    while 1:
        time.sleep(delay)
        print name
try:
    thread.start_new_thread(print_t,("First Message",1,))
    thread.start_new_thread(print_t,("Second Message",2,))
except Exception as e:
    print e

Unhandled exception in thread started by
sys.excepthook is missing
lost sys.stderr

Unhandled exception in thread started by
sys.excepthook is missing
lost sys.stderr

Answer 1

The exception happens when the main thread (the one that starts other threads) finishes. In your code the main thread quits before any of your sub threads (created by start_new_thread ) finish. The solution is to wait at your main thread till the child threads ends.

See the discussion Simple threading in Python 2.6 using thread.start_new_thread()

Answer 2

It is because the main thread ends, and as you use thread insted of threading , the "child threads" die as well.

Better use the module threading .