Python线程isAlive方法

__author__ = 'LL_YING'
'''
线程创建之后，可以使用Thread对象的isAlive方法查看线程是否运行，为True则运行
'''
import threading
import time

class myThread(threading.Thread):
    def __init__(self, num):
        threading.Thread.__init__(self)
        self.num = num
    def run(self):
        time.sleep(5)
        print(self.num)

def func():
    t.start()
    print(t.isAlive())
t = myThread(1)
func()
t = myThread(1)
# 输出
# True
# 1