Pi wrote:
> Hi Tutor,
>
> with this code i am getting actual date from internet. I need correct
> date, because i am not sure this set on computer is right.
>
> import requests, time
>
> try:
> OnLineDate = requests.get("http://just-the-time.appspot.com";).text[:10]
> OffLineDate = time.strftime("%Y-%m-%d")
>
> if OnLineDate == OffLineDate:
>
> do_something
>
> else:
>
> do_something_else
>
>
> except requests.ConnectionError:
> print("Can not connect.")
>
> But this code is run once. And i am stuck. Tries with while loop doesnt
> took any advance. I was thinking about something like after method used
> in tkinter, but still i cant figure out how do this. Can You guide me,
> how check connection to internet to check for every lets say 30 seconds
> until success?
You are on the right track with the while-loop. You can use the else clause
of the try...except construct to break out of the loop once you have
successfully read the date:
# untested
import requests, time
while True: # run forever
try:
OnLineDate = requests.get("http://just-the-time.appspot.com";).text[:10]
except requests.ConnectionError:
print("Can not connect.")
else:
# no exception
OffLineDate = time.strftime("%Y-%m-%d")
if OnLineDate == OffLineDate:
do_something
else:
do_something_else
break # out of the while-True loop
time.sleep(30) # try again after 30 seconds
If you want to give up after a few tries replace the while loop with
for attempt in range(max_attempts):
... # same as above
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