python 进程

os.fork [知道即可]

自定义类继承进程

start() 调用run()

进程池pool

进程间通信queue

线程

死锁

银行家算法

生产消费模式

1.多线程 , start()方法是开启方法, join()目的是执行完才往下执行

#!/usr/bin/env python
# -*- coding:utf-8 -*- 
 
import threading  #线程
import time
 
def music(num=5): #有一个参数
    print("music start %s" %time.ctime())
 
    time.sleep(num)
    print("music end %s" %time.ctime())
 
def game(num=3): #有一个参数
    print("game start %s" %time.ctime())
 
    time.sleep(num)
    print("game end %s" %time.ctime())
 
if __name__ == '__main__':
    t1=threading.Thread(target=music)
    t2=threading.Thread(target=game)
 
    t1.start()
    t2.start()
 
    t1.join()             #t1执行完,才执行能执行下面的"ending....."
    t2.join()
    print("ending.........")  #主线程输出ending
'''
music start Thu Jul 13 14:30:25 2017
game start Thu Jul 13 14:30:25 2017
game end Thu Jul 13 14:30:28 2017
music end Thu Jul 13 14:30:30 2017
ending.........
[Finished in 5.1s]
'''

　2.自定义线程, start()调用的是重写的 run()方法

#!/usr/bin/env python
# -*- coding:utf-8 -*- 
 
import threading  #线程
import time
 
class MyThead(threading.Thread):
    def __init__(self,num):
        threading.Thread.__init__(self)
        self.num=num
#start()会调用run()方法
    def run(self):  
        print "running on number:",self.num
        print "start time ",time.ctime()
        time.sleep(self.num)
        print "end time ",time.ctime()
 
if __name__ == '__main__':
    t1=MyThead(3)
    t2=MyThead(4)
 
    t1.start()
    t2.start()
    print("ending.........")  #主线程输出ending
"""
running on number: 3
start time  Thu Jul 13 14:51:01 2017
 running on number:ending......... 4
start time  Thu Jul 13 14:51:01 2017
end time  Thu Jul 13 14:51:04 2017
end time  Thu Jul 13 14:51:05 2017
[Finished in 4.1s]
"""