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]
"""