I have a python script that search for something in the internet.the script takes 2 minutes to finish. after 2 minutes script will exit and the job is done.
but i want to run this script on my computer constantly for a day without stopping. it means i want to rerun the script after it's finished for a day.
i tried something like this so far:
status = True
def setstatus(stat):
global status
if staus:
status = not stat
timer = Timer(1440,setstatus,[True])
timer.start()
while status:
# do the job
any suggestion?
time.time()
will give you the current time (in seconds from some time origin, in fact at the start of 1970). Calculate the end time by adding a number of seconds from the current time, and loop until then.
import time
end_time = time.time() + 86400
while time.time() < end_time:
# do the job
Obviously this will keep using as much CPU as your job requires -- your stated aim is "to run this script on my computer constantly for a day without stopping" and this will do what you have asked for. If in fact you want it to reduce CPU consumption by sleeping for a while on each iteration, then you can insert a time.sleep(...)
in the loop (with sleep time value in seconds).
Only works for GNU/Unix based systems.
You can use Cron .
For exemple, running a script everyday at 10 am
Enter crontab -e
in terminal. Add 0 10 * * * /path/to/script.py
to the prompted file.
If you are using it with a web-scraper as your question states, you can have a shell script to encapsulate your python script.
#!/bin/bash
# setup variables
DATE=$(date +"%Y-%m-%d-%H-%M")
SCRIPT_FILE="path/to/python/script.py"
OUTPUT_FILE="path/to/save/outputs/${DATE}.json"
# activate virtualenv and run scrapy, for example
source path/to/venv/bin/activate
scrapy runspider ${SCRIPT_FILE} -o ${OUTPUT_FILE}
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