python3 协程

import gevent,time
from gevent import monkey    
monkey.patch_all()   #gevent三行放在其他所有import语句之前可以避免出现警告或者报错信息,导致程序不能正常运行
def test1():
    for i in range(10):
        time.sleep(1)
        print(‘test1‘,1)
 
def test2():
    for i in range(10):
        time.sleep(2)
        print(‘test2‘,2)
g1 = gevent.spawn(test1)
g2 = gevent.spawn(test2)
g1.join()
g2.join()
print("main")