Python-4.31 gevent模块

Gevent 是一个第三方库，可以轻松通过gevent实现并发同步或异步编程，在gevent中用到的主要模式是Greenlet，它是以C扩展模块形式接入Python的轻量级协程。 Greenlet全部运行在主程序操作系统进程的内部，但它们被协作式地调度。

import time

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


def eat(name):
    print('%s eat 1' % name)
    time.sleep(3)
    print('%s eat 2' % name)


def play(name):
    print('%s play 1' % name)
    time.sleep(4)
    print('%s play 2' % name)


start_time = time.time()
g1 = gevent.spawn(eat, 'winnie')
g2 = gevent.spawn(play, 'allen')

g1.join()
g2.join()
stop_time = time.time()
print(stop_time - start_time)

结果：
winnie eat 1
allen play 1
winnie eat 2
allen play 2
4.026681184768677

import time

from gevent import monkey;

monkey.patch_all()
import gevent


def eat(name):
    print('%s eat 1' % name)
    time.sleep(3)
    print('%s eat 2' % name)


def play(name):
    print('%s play 1' % name)
    time.sleep(4)
    print('%s play 2' % name)


start_time = time.time()
g1 = gevent.spawn(eat, 'winnie')
g2 = gevent.spawn(play, 'allen')

# g1.join()
# g2.join()
gevent.joinall([g1, g2])
stop_time = time.time()
print(stop_time - start_time)