协程（Python）

一、gevent

#__author__:Kelvin
#date:2020/5/13 13:34

from gevent import monkey
monkey.patch_all()
import time
import gevent

def func():
    print("start")
    # gevent.sleep(1)
    time.sleep(1)
    print("end")

g1=gevent.spawn(func)
g2=gevent.spawn(func)
g3=gevent.spawn(func)
gevent.joinall([g1,g2,g3])