論多線程python2與python3

python3 常用線程

# -*- coding: utf-8 -*-
import time
from threading import Thread


def test(i):
    while True:
        print("i",i+1)
        time.sleep(1)
        i+=1
        if i == 5:
            break
print(1)
t = Thread(target=test, args=(0,))
#t.setDaemon(True)
t.start()
print("---",2)

主線程一直運行，遇到循環耗時操作分出子線程，主線程運行到最后等待子線程結束，再進行關閉

 

 

python2.7 thread方法

# -*- coding: utf-8 -*-
import time
# from threading import Thread
import thread

def test(i):
    while True:
        print "i",i+1
        time.sleep(1)
        i+=1
        if i == 5:
            break
print 1
thread.start_new_thread(test, (0,))
# t = Thread(target=test, args=(0,))
# t.start()
print "---",2

主線程運行到最后就結束，相當於python3中設置了守護進行，如上注釋部分所示