Python中的threading

#!/usr/bin/env python

# -*- coding: utf-8 -*-

import threading, time

#新线程执行的代码:

def loop():

    print('thread %s is running...' % threading.current_thread().name)

    n = 0

    while n < 5:

        n = n + 1

        print('thread %s ' % threading.current_thread().name)

        time.sleep(3)

    print('thread %s ended.' % threading.current_thread().name)

print('thread %s is running...' % threading.current_thread().name)

t = threading.Thread(target=loop, name='LoopThread')

t.start()

#t.join()

print('thread %s ended.' % threading.current_thread().name)

执行结果：

thread MainThread is running...

thread LoopThread is running...thread MainThread ended.

thread LoopThread

thread LoopThread

thread LoopThread

thread LoopThread

thread LoopThread

thread LoopThread ended.

会在主线程中创建子线程，主线程和子线程并行运行

#!/usr/bin/env Python

# -*- coding: utf-8 -*-

import Queue 

import time 

import threading 

import random 

def Go(name):

   # time.sleep(1)

    print("go" + str(name))

    time.sleep(1)

for j in range(20):

    t1 = threading.Thread(group=None, target=go, name=None, args=(j,)) 

    t1.start()

for i in range(20):

    go(i)

j是并行执行，主线程和20个子线并行执行

i是串行执行，只有主线程

#!/usr/bin/env python

# -*- coding: utf-8 -*-

import Queue 

import time 

import threading 

import random 

q = Queue.Queue()

def pro(name):

    print("---pro data kaiqi")

    #time.sleep(3)

    for i in range(20):

        time.sleep(1)

        print(name + "pro data" + str(i))

        q.put(i)

def con(name):

    print("-----con data kaiqi")

    n = 0

    while n < 20:

        time.sleep(3)

        data = q.get()

        print(name + "con data----" + str(data))

        n += 1

t1 = threading.Thread(group=None, target=pro, name=None, kwargs={'name':'laoban'}) 

t2 = threading.Thread(group=None, target=con, name=None, kwargs={'name':'yuangong'})

t1.start()

t2.start()      

两个线程并行交互，在一个队列中拿数据