Timer class not working as expected.

[MuntyScruntfundle]

Hi folks.

From what I can find on how to compare dates, basically use the < and >, and how to put a class structure together, the following should work. But it doesn't. If I check more than or less than the tripped routine is always returning True. Is this because it's trying to return an object rather than a value??? And why does get dates return ,bound method customer.getsdates blah blah 0x0blahblah?

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import datetime import time     class clstimer:     def __init__(self, interval):         self.interval=interval         self.startdate=datetime.datetime.now()       def tripped():         nowdate=datetime.datetime.now()         checkdate=self.startdate + datetime.timedelta(seconds=self.interval)           if nowdate>checkdate:             self.startdate=datetime.datetime.now()             return True         else:             return False       def getdates():         nowdate=datetime.datetime.now()         checkdate=self.startdate + datetime.timedelta(seconds=self.interval)         return str(nowdate), str(checkdate)             def main():     tmr=clstimer(5)       print(tmr.getdates)       while True:         if tmr.tripped:             print("Tripped")         else:             print("Nope")         time.sleep(1)     main()

What am I misunderstanding?

Many thanks.

[mlieqo]

Hello, first of all, you are missing 'self' argument for methods tripped() and getdates(). And second - if you want to execute the method you need to add parentheses like this:

1	print(tmr.getdates())

also for tripped method inside your while loop:

1	tmr.tripped()

otherwise they are just method references.

[MuntyScruntfundle]

But if I put brackets on I get told the defd takes no arguments but I'm supplying 1.

That's what I thought, but it just won't have it.

[mlieqo]

Yes, as I wrote you also need to add 'self' argument to methods tripped and getdates.

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def tripped(self):     nowdate=datetime.datetime.now()     checkdate=self.startdate + datetime.timedelta(seconds=self.interval)        if nowdate>checkdate:         self.startdate=datetime.datetime.now()         return True     else:         return False   def getdates(self):     nowdate=datetime.datetime.now()     checkdate=self.startdate + datetime.timedelta(seconds=self.interval)     return str(nowdate), str(checkdate)

[MuntyScruntfundle]

Ahhhhh, crud. Sorry, I had missed that bit in your explanation.

Lesson lernt. Many thanks. :o)