python开启线程的两种方式

方式一

from threading import Thread
import time
def hello(name):
    time.sleep(2)
    print(\'%s say hello\' %name)

if __name__ == \'__main__\':
    t=Thread(target=hello,args=(\'xiaomao\',))
    t.start()
    print(\'主线程\')

方式二

from threading import Thread
import time
class Hello(Thread):
    def __init__(self,name):
        super().__init__()
        self.name=name
    def run(self):
        time.sleep(2)
        print(\'%s say hello\' % self.name)


if __name__ == \'__main__\':
    t = Hello(\'xiaomao\')
    t.start()
    print(\'主线程\')