python-gevent模块(自动切换io的协程)
import gevent def foo(): print("Running in foo") gevent.sleep(2) print("Explicit context switch to foo again") def bar(): print("Explicit context to bar") gevent.sleep(1 ) print("Implicit context switch back to bar") def func3(): print("running func3") gevent.sleep(0)#遇到io就切换,sleep最长2秒,所以整个程序花费两秒,如果是串行需要花费3秒 print("running func3 again") gevent.joinall([ gevent.spawn(foo),#启动一个协程 gevent.spawn(bar), gevent.spawn(func3) ] )