Python3 threading Timer 用法

Timer 就是一个定时器,比如说在10s执行 t()

[code]
# -*- coding: utf-8 -*-
__author__ = 'songhao'
from threading import Timer, Thread

def t():
print("t")

for x in range(10):
tr = Timer(10, t)
tr.start()

Timer 源码:

Python

class Timer(Thread): """Call a function after a specified number of seconds: t = Timer(30.0, f, args=None, kwargs=None) t.start() t.cancel() # stop the timer's action if it's still waiting """ def __init__(self, interval, function, args=None, kwargs=None): Thread.__init__(self) self.interval = interval self.function = function self.args = args if args is not None else [] self.kwargs = kwargs if kwargs is not None else {} self.finished = Event() def cancel(self): """Stop the timer if it hasn't finished yet.""" self.finished.set() def run(self): self.finished.wait(self.interval) if not self.finished.is_set(): self.function(*self.args, **self.kwargs) self.finished.set()

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class Timer ( Thread ) :      """Call a function after a specified number of seconds:               t = Timer(30.0, f, args=None, kwargs=None)             t.start()             t.cancel()     # stop the timer's action if it's still waiting       """        def __init__ ( self , interval , function , args = None , kwargs = None ) :          Thread . __init__ ( self )          self . interval = interval          self . function = function          self . args = args if args is not None else [ ]          self . kwargs = kwargs if kwargs is not None else { }          self . finished = Event ( )        def cancel ( self ) :          """Stop the timer if it hasn't finished yet."""          self . finished . set ( )        def run ( self ) :          self . finished . wait ( self . interval )          if not self . finished . is_set ( ) :              self . function ( * self . args , * * self . kwargs )          self . finished . set ( )

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