Keep a python script running after browser window closed

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  • sophie_newbie
    #1

    Keep a python script running after browser window closed

    Hi,

    I have a cgi script that performs a very long computation that can
    take several hours to complete. Is there any smart way that I can keep
    this script running until it is finished (after the user has closed
    the browser) and email them with the results. The email bit isn't the
    problem, I just don't know how to keep the code running in the
    background. I'm sure there is a smart way to do this...

    Thanks!
    Tags: None
    • Mike Driscoll
      #2
      Re: Keep a python script running after browser window closed

      On Mar 7, 10:28 am, sophie_newbie <paulgeele...@g mail.comwrote:
      Hi,
      >
      I have a cgi script that performs a very long computation that can
      take several hours to complete. Is there any smart way that I can keep
      this script running until it is finished (after the user has closed
      the browser) and email them with the results. The email bit isn't the
      problem, I just don't know how to keep the code running in the
      background. I'm sure there is a smart way to do this...
      >
      Thanks!
      You might have your cgi script use the subprocess module to open a
      second script that does the long-running process.

      Mike

        Comment

        • sophie_newbie
          #3
          Re: Keep a python script running after browser window closed

          On Mar 7, 4:33 pm, Mike Driscoll <kyoso...@gmail .comwrote:
          On Mar 7, 10:28 am, sophie_newbie <paulgeele...@g mail.comwrote:
          >
          Hi,
          >
          I have a cgi script that performs a very long computation that can
          take several hours to complete. Is there any smart way that I can keep
          this script running until it is finished (after the user has closed
          the browser) and email them with the results. The email bit isn't the
          problem, I just don't know how to keep the code running in the
          background. I'm sure there is a smart way to do this...
          >
          Thanks!
          >
          You might have your cgi script use the subprocess module to open a
          second script that does the long-running process.
          >
          Mike
          Ya it looks like:

          import subprocess

          # spawn subprocess
          subprocess.Pope n(["python", "spawn.py"])

          Should do this job, where spawn.py is the script to do the job.
          Thanks.

            Comment

            • sjdevnull@yahoo.com
              #4
              Re: Keep a python script running after browser window closed

              On Mar 10, 1:42 pm, sophie_newbie <paulgeele...@g mail.comwrote:
              On Mar 7, 4:33 pm, Mike Driscoll <kyoso...@gmail .comwrote:
              >
              >
              >
              On Mar 7, 10:28 am, sophie_newbie <paulgeele...@g mail.comwrote:
              >
              Hi,
              >
              I have a cgi script that performs a very long computation that can
              take several hours to complete. Is there any smart way that I can keep
              this script running until it is finished (after the user has closed
              the browser) and email them with the results. The email bit isn't the
              problem, I just don't know how to keep the code running in the
              background. I'm sure there is a smart way to do this...
              >
              Thanks!
              >
              You might have your cgi script use the subprocess module to open a
              second script that does the long-running process.
              >
              Mike
              >
              Ya it looks like:
              >
              import subprocess
              >
              # spawn subprocess
              subprocess.Pope n(["python", "spawn.py"])
              >
              Should do this job, where spawn.py is the script to do the job.
              Thanks.
              In real life, you probably want spawn.py to do a full daemonize. That
              means fork/setsid/fork/chdir appropriately/deal with stdin/stdout/
              umask, or however you set up a service on Windows.

                Comment

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