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+--- Thread: Timer class not working as expected. (/thread-15819.html)
Timer class not working as expected. - MuntyScruntfundle - Feb-01-2019
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?
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.
RE: Timer class not working as expected. - mlieqo - Feb-01-2019
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:
print(tmr.getdates())also for tripped method inside your while loop:
tmr.tripped()otherwise they are just method references.
RE: Timer class not working as expected. - MuntyScruntfundle - Feb-01-2019
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.
RE: Timer class not working as expected. - mlieqo - Feb-01-2019
Yes, as I wrote you also need to add 'self' argument to methods tripped and getdates.
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)
RE: Timer class not working as expected. - MuntyScruntfundle - Feb-02-2019
Ahhhhh, crud. Sorry, I had missed that bit in your explanation.
Lesson lernt. Many thanks. :o)