每 x 分钟执行一次函数：sched 或 threading.Timer？

Question

我需要编写每 x 分钟执行一次 give 方法的程序。

我找到了两种方法：第一种是使用 sched 模块，第二种是使用 Threading.Timer.

第一种方法:

import sched, time
s = sched.scheduler(time.time, time.sleep)
def do_something(sc): 
    print "Doing stuff..."
    # do your stuff
    sc.enter(60, 1, do_something, (sc,))

s.enter(60, 1, do_something, (s,))
s.run()

第二个:

import threading

def do_something(sc): 
    print "Doing stuff..."
    # do your stuff
   t = threading.Timer(0.5,do_something).start()

do_something(sc)

有什么区别，如果有一个比另一个更好，那是哪个？

Answer 1

在 Python 2 - Python 3.2:

中不安全

来自 the Python 2.7 sched documentation:

In multi-threaded environments, the scheduler class has limitations with respect to thread-safety, inability to insert a new task before the one currently pending in a running scheduler, and holding up the main thread until the event queue is empty. Instead, the preferred approach is to use the threading.Timer class instead.

来自the latest Python 3 sched documentation

Changed in version 3.3: scheduler class can be safely used in multi-threaded environments.

每 x 分钟执行一次函数：sched 或 threading.Timer？

To execute a function every x minutes: sched or threading.Timer?

python

timer

python-multithreading