On Sat, Apr 5, 2014 at 4:02 PM, 张佩佩 <zhangpeipei...@outlook.com> wrote: > def fun(): > a = threading.Thread(target=hello(), name='hello')
> It seems that threading.Thread() in file1 not create a new thread but use > MainThread. > Anyone can explain this ? > Thank you in advance. Suggestion: Cut the code down until you find the exact bit that's showing a problem. You don't need two files for this; in fact, all you need is your definition of hello, the call to threading.Thread(), and a print statement after it, which you'll see doesn't happen. The problem here is that you're already *calling* hello() in the argument list. Before threading.Thread() gets called, its arguments get fully evaluated... which calls hello(), which infinitely loops. That's why it's getting called on the main thread. To spin off a thread that will call hello(), take the parentheses off: a = threading.Thread(target=hello, name='hello') That'll pass a function, rather than the return value of that function, and then Thread can call that. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
