A, gevent achieve a certain function asynchronous concurrent
#!/usr/bin/env python
# _*_ coding:utf-8 _*_
# Date: 2019/11/30
# Author: SunXiuWen
"""pip install -i https://pypi.douban.com/simple/ gevent"""
import time
import gevent
from gevent import monkey
monkey.patch_all()
def task(i):
time.sleep(3)
print(i)
def work():
g_list = [gevent.spawn(task, i) for i in range(10)]
gevent.joinall(g_list)
return [i.value for i in g_list]
if __name__ == '__main__':
start = time.time()
ret = work()
end = time.time() - start
print(ret, '\n', end)
"""结论：
如果不配置monkey，则是阻塞状态，要花费30秒左右，且导入gevent模块必须在一个模块中
"""Work applications: such as reptiles, downloading is a function f1, resolution is a function of f2, lived through the spawn, then by
gevent.joinall([gevent.spawn(f1),gevent.spawn(f2)])enabling concurrent coroutines!