python如何同时运行两个函数

在python中利用线程同时运行两个函数，具体方法如下：

def fun1():
while True:
time.sleep(2)
print("fun1")
def fun2():
while True:
time.sleep(6)
print("fun2")
threads = []
threads.append(threading.Thread(fun1))
threads.append(threading.Thread(fun2))
print(threads)
if __name__ == '__main__':
for t in threads:
print(t)
t.start()