import threading
def setInterval(interval):
def decorator(function):
def wrapper(*args, **kwargs):
stopped = threading.Event()
def loop(): # executed in another thread
while not stopped.wait(interval): # until stopped
function(*args, **kwargs)
t = threading.Thread(target=loop)
t.daemon = True # stop if the program exits
t.start()
return stopped
return wrapper
return decorator
用法：@setInterval(.5)
def function():
“…”
stop = function() # start timer, the first call is in .5 seconds
stop.set() # stop the loop
stop = function() # start new timer
# …
stop.set()cancel_future_calls = call_repeatedly(60, print, “Hello, World”)
# …
cancel_future_calls()