eventlet引发的学习-初识多线程

参考

python多线程

python threading模块官方文档

初识多线程

在python多线程中有关于python多线程的详细基础知识，此处不在赘述，只是简单总结下：

python中自带了2个模块支持多线程：

* thread：提供相对底层的多线程

* threading：提供了2种创建多线程的方式：

*

threading.Thread(target,args)

对象,target即为要执行的函数

* 创建自己的类继承threading.Thread，并实现

__init__

以及

run

方法，然后创建对象

测试代码

threading模块创建Thread对象方式

from threading import Thread
import time

G_COUNT = 100000000

def func1():
for i in range(10):
print("Func1:%s at %s" % (i,time.time()))
time.sleep(1)

def func2():
for i in range(10):
print("Func2:%s at %s" % (i, time.time()))
time.sleep(1)

def main():

t1 = Thread(target=func1)
t2 = Thread(target=func2)

t1.start()
t2.start()

t1.join()
t2.join()

if __name__ == "__main__":
main()

执行的结果如下：

Func1:0 at 1456760385.98
Func2:0 at 1456760385.98
Func1:1 at 1456760386.99
Func2:1 at 1456760386.99
Func1:2 at 1456760387.99
Func2:2 at 1456760387.99
Func2:3 at 1456760388.99
Func1:3 at 1456760388.99
Func1:4 at 1456760389.99
Func2:4 at 1456760389.99
Func1:5 at 1456760391.0
Func2:5 at 1456760391.0
Func1:6 at 1456760392.0
Func2:6 at 1456760392.0
Func1:7 at 1456760393.0
Func2:7 at 1456760393.0
Func1:8 at 1456760394.0
Func2:8 at 1456760394.0
Func1:9 at 1456760395.0
Func2:9 at 1456760395.0

threading模块继承Thread类方式

import threading
import time

class MyThread(threading.Thread):

def __init__(self, thread_name, count):
super(MyThread, self).__init__()
self.thread_name = thread_name
self.count = count

def run(self):
print "Starting " + self.name
print_time(self.name, count)
print "Ending " + self.name

def print_time(name, count):
for i in range(count):
print "%s:%s" % (name, time.ctime(time.time()))
time.sleep(1)

count = 5
thread1 = MyThread("Thread-1", count)
thread2 = MyThread("Thread-2", count)

thread1.start()
thread2.start()

执行的结果如下：

Starting Thread-1
Starting Thread-2

Thread-1:Mon Feb 29 23:37:28 2016
Thread-2:Mon Feb 29 23:37:28 2016
Thread-1:Mon Feb 29 23:37:29 2016
Thread-2:Mon Feb 29 23:37:29 2016
Thread-1:Mon Feb 29 23:37:30 2016
Thread-2:Mon Feb 29 23:37:30 2016
Thread-1:Mon Feb 29 23:37:31 2016
Thread-2:Mon Feb 29 23:37:31 2016
Thread-1:Mon Feb 29 23:37:32 2016
Thread-2:Mon Feb 29 23:37:32 2016
Ending Thread-1
Ending Thread-2