小编Kum*_*ade的帖子

代码在这里：

from multiprocessing import pool
def worker(num):
    print 'Worker:', num
    return

if __name__ == '__main__':
    jobs = []
    for i in range(5):
        p = multiprocessing.Process(target=worker, args=(i,))
        jobs.append(p)
        p.start()

对不起，我是python的新手。每当我尝试导入池时，我都会收到以下错误。它说 os.chdir(wdir) 有问题，但我不知道是什么。有什么帮助吗？

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Users\z080302\Desktop\WinPython-32bit-2.7.6.3\python-2.7.6\lib\site-packages\spyderlib\widgets\externalshell\sitecustomize.py", line 540, in runfile
execfile(filename, namespace)
File "C:/Users/z080302/Desktop/Python_Projects/mp_test.py", line 18, in <module>
p = multiprocessing.Process(target=worker, args=(i,))
NameError: name 'multiprocessing' is not defined