python多线程

#!/usr/bin/python
import time
import threading

def worker():
    print("worker\n")
    time.sleep(1)
    return

'''
method1，多线程，定义函数，调用函数
'''
if __name__ == '__main__':
    for i in xrange(5):
        t = threading.Thread(target = worker)
        t.start()
        
        
'''
method2,继承类，重写run方法
'''
class myThread(threading.Thread):
    def run(self):
        worker()

for i in xrange(3):
    t = myThread()
    t.start()