repost: http web page fetch question

[grocery_stocker]

Given the following...

[cdalten@localhost oakland]$ more basic.py
#!/usr/bin/python

import sched
import time

scheduler = sched.scheduler(time.time, time.sleep)

def print_event(name):
print 'EVENT:', time.time(), name

print 'START:', time.time()
scheduler.enter(2, 1, print_event, ('first',))

scheduler.run()
[cdalten@localhost oakland]$ ./basic.py
START: 1240584506.06
EVENT: 1240584508.06 first
[cdalten@localhost oakland]$


How do I modify it so that it runs every hour on the hour.

 

[Emile van Sebille]

Given the following...

[cdalten@localhost oakland]$ more basic.py

How do I modify it so that it runs every hour on the hour.

I'd probably use cron, but here's one way.

Emile
-----

import sched
import time

scheduler = sched.scheduler(time.time, time.sleep)

def print_event(count,rescheduler):
print 'EVENT:', time.time(), count
rescheduler.enter(2,1,print_event,(count+1,rescheduler))

print 'START:', time.time()
scheduler.enter(2, 1, print_event, (1,scheduler))

scheduler.run()

 

[Emile van Sebille]

Given the following...

[cdalten@localhost oakland]$ more basic.py

How do I modify it so that it runs every hour on the hour.

I'd probably use cron, but here's one way.

Emile
-----

import sched
import time

scheduler = sched.scheduler(time.time, time.sleep)

def print_event(count,rescheduler):
print 'EVENT:', time.time(), count
rescheduler.enter(2,1,print_event,(count+1,rescheduler))

print 'START:', time.time()
scheduler.enter(2, 1, print_event, (1,scheduler))

scheduler.run()

 

[Gabriel Genellina]

scheduler = sched.scheduler(time.time, time.sleep)

How do I modify it so that it runs every hour on the hour.

(The sched module is almost useless, IMHO)

I'd use cron (linux) or schtasks (windows).
If it has to be a Python script, I'd just use time.sleep:

def compute_delay_until_next_hour():
now = time.localtime()
secs_past_hour = now.tm_min * 60 + now.tm_sec
delay = 60*60 - secs_past_hour
return delay

# do_something() # optional
while True:
dt = compute_delay_until_next_hour()
time.sleep(dt)
do_something()

 

[Gabriel Genellina]

scheduler = sched.scheduler(time.time, time.sleep)

How do I modify it so that it runs every hour on the hour.

(The sched module is almost useless, IMHO)

I'd use cron (linux) or schtasks (windows).
If it has to be a Python script, I'd just use time.sleep:

def compute_delay_until_next_hour():
now = time.localtime()
secs_past_hour = now.tm_min * 60 + now.tm_sec
delay = 60*60 - secs_past_hour
return delay

# do_something() # optional
while True:
dt = compute_delay_until_next_hour()
time.sleep(dt)
do_something()