from threading import Timer
import time
 
def printHello():
 print ("Hello")
 print("当前时间戳是", time.time())
 
def loop_func(func, second):
 #每隔second秒执行func函数
 while True:
  timer = Timer(second, func)
  timer.start()
  timer.join()
 
loop_func(printHello, 1)

Hello
当前时间戳是 1569224253.1897497
Hello
当前时间戳是 1569224254.1911764
Hello
当前时间戳是 1569224255.1924803
Hello
当前时间戳是 1569224256.1957717
Hello
当前时间戳是 1569224257.1964536
……

import time
 
def printHello():
 print ("Hello")
 print("当前时间戳是", time.time())
 
def loop_func(func, second):
 # 每隔second秒执行func函数
 while True:
  func()
  time.sleep(second)
 
loop_func(printHello, 1)

Hello
当前时间戳是 1569224698.5843027
Hello
当前时间戳是 1569224699.5843854
Hello
当前时间戳是 1569224700.5870178
Hello
当前时间戳是 1569224701.5881224
Hello
当前时间戳是 1569224702.588771
Hello
当前时间戳是 1569224703.5896
Hello
当前时间戳是 1569224704.5902
……