Python（多线程时间监测）

1. 引入第三方模块

1.1	import threading
	import time

2. 实现timeit方法（函数运行时间）

2.1 def timeit(f):
    def wrapper(*args, **kwargs):
        start_time = time.time()
        res = f(*args, **kwargs)
        end_time = time.time()
        print("%s函数运行时间为：%.2f" %(f.__name__, end_time - start_time))
        return res
    return wrapper

3. 模拟网上下载文件

	3.1 def download_music(name):
		    time.sleep(2)
		    print("download music:%s......"%(name))
		
		def download_movie(name):
		    time.sleep(2)
		    print("download movie:%s......"%(name))

4. 多线程实现下载

	@timeit			//监测多线程下载所用时间
	
	def main():
	    t1 = threading.Thread(target=download_music, args=("哈哈哈",))         	//args传递的是元组
	    t2 = threading.Thread(target=download_movie, args=("略略略",))
	
	    t1.start()
	    t2.start()
	
	    t1.join()
	    t2.join()
	
	    print("下载完成！")

main()