(python) 每 x 秒执行一次函数

Question

this is my source code that executes function every 1 seconds

buy, it only executes one times.

In short, I want to get the # of line from the named pipe output every seconds

Is there any suggestion for this problem?

thank you for your help in advance

class Monitor:
    def __init__(self, namedpipe, name):
        self.namedpipe = namedpipe
        self.name = name
        self.count = 0
    def run(self):
        print self.name+" start run"
        while True:
            line = self.namedpipe.readline()
            self.count = self.count+1
    def getCost(self):
        print "Hi"


while True:
    line = monitor.readline()
    line = line.strip()
    if not line: 
        ans =raw_input('stop?')
        if ans=='y': break
    monitorList = open(line, 'r')
    m = Monitor(monitorList, line)
    thread.start_new_thread(m.run, ())
    time.sleep(1)
    threading.Timer(0.1, m.getCost).start()

Answer 1

With Threading.Timer, you have to restart the timer each time it has expired - so during the execution of the function called when the timer expires - m.getCost in your code - the timer has to be started again. You might want to define a wrapper function to do this work, to avoid polluting m.getCost() with timer stuff.