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Re: Reason for not allowing import twice but allowing reload()

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From the discussions in this thread, I get the impression that there are genuine
requirements to reload() a module during a program's execution.

It is fairly easy to see reload() in context of interactive execution, but how does it
come into picture in case of non-interactive Python program executions?

- one way could to be periodically poll for change of module version (time stamp etc.),
  and reload(),
- other could be sending a signal to program and reload() selected modules during
  processing of that signal by the program. Is it done this way in Python as well?

  There used to be programs which could reload the configuration file (and act
  accordingly) without needing to restart the program) when specific signal was sent
  to them.

Am I on right track in my understanding?
What are the other ways to accomplish reload() during the execution of a non-interactive Python program?

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Reason for not allowing import twice but allowing reload() alien2utoo@gmail.com - 2016-02-28 22:40 -0800
  Re: Reason for not allowing import twice but allowing reload() Chris Angelico <rosuav@gmail.com> - 2016-02-29 18:01 +1100
    Re: Reason for not allowing import twice but allowing reload() Steven D'Aprano <steve@pearwood.info> - 2016-03-01 22:18 +1100
      Re: Reason for not allowing import twice but allowing reload() Chris Angelico <rosuav@gmail.com> - 2016-03-01 22:39 +1100
        Re: Reason for not allowing import twice but allowing reload() Steven D'Aprano <steve@pearwood.info> - 2016-03-02 04:11 +1100
          Re: Reason for not allowing import twice but allowing reload() Chris Angelico <rosuav@gmail.com> - 2016-03-02 05:04 +1100
      Re: Reason for not allowing import twice but allowing reload() Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-01 14:53 -0700
      Re: Reason for not allowing import twice but allowing reload() Chris Angelico <rosuav@gmail.com> - 2016-03-02 09:02 +1100
      Re: Reason for not allowing import twice but allowing reload() Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-01 15:29 -0700
        Re: Reason for not allowing import twice but allowing reload() Steven D'Aprano <steve@pearwood.info> - 2016-03-02 12:19 +1100
          Re: Reason for not allowing import twice but allowing reload() Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-01 19:22 -0700
            Re: Reason for not allowing import twice but allowing reload() Rustom Mody <rustompmody@gmail.com> - 2016-03-02 02:15 -0800
              Re: Reason for not allowing import twice but allowing reload() Rustom Mody <rustompmody@gmail.com> - 2016-03-02 02:19 -0800
            Re: Reason for not allowing import twice but allowing reload() Grant Edwards <invalid@invalid.invalid> - 2016-03-02 15:15 +0000
      Re: Reason for not allowing import twice but allowing reload() Chris Angelico <rosuav@gmail.com> - 2016-03-02 11:13 +1100
  Re: Reason for not allowing import twice but allowing reload() Ian Kelly <ian.g.kelly@gmail.com> - 2016-02-29 00:02 -0700
  Re: Reason for not allowing import twice but allowing reload() Chris Angelico <rosuav@gmail.com> - 2016-02-29 18:11 +1100
    Re: Reason for not allowing import twice but allowing reload() BartC <bc@freeuk.com> - 2016-02-29 15:33 +0000
      Re: Reason for not allowing import twice but allowing reload() Chris Angelico <rosuav@gmail.com> - 2016-03-01 03:05 +1100
  Correct IDLE usage (was Reason for not allowing import twice but allowing reload()) Rustom Mody <rustompmody@gmail.com> - 2016-02-29 04:42 -0800
    Re: Correct IDLE usage (was Reason for not allowing import twice but allowing reload()) Terry Reedy <tjreedy@udel.edu> - 2016-03-01 01:52 -0500
      Re: Correct IDLE usage (was Reason for not allowing import twice but allowing reload()) Rustom Mody <rustompmody@gmail.com> - 2016-03-02 07:22 -0800
        Re: Correct IDLE usage (was Reason for not allowing import twice but allowing reload()) Terry Reedy <tjreedy@udel.edu> - 2016-03-02 21:40 -0500
          Re: Correct IDLE usage (was Reason for not allowing import twice but allowing reload()) Rustom Mody <rustompmody@gmail.com> - 2016-03-02 20:07 -0800
            Re: Correct IDLE usage (was Reason for not allowing import twice but allowing reload()) Rustom Mody <rustompmody@gmail.com> - 2016-03-02 20:17 -0800
  Re: Reason for not allowing import twice but allowing reload() alien2utoo@gmail.com - 2016-02-29 05:00 -0800
  Re: Reason for not allowing import twice but allowing reload() alien2utoo@gmail.com - 2016-02-29 05:22 -0800
    Re: Reason for not allowing import twice but allowing reload() alien2utoo@gmail.com - 2016-02-29 05:25 -0800
      Re: Reason for not allowing import twice but allowing reload() Steven D'Aprano <steve@pearwood.info> - 2016-03-02 04:00 +1100
        Re: Reason for not allowing import twice but allowing reload() alien2utoo@gmail.com - 2016-03-05 04:51 -0800
          Re: Reason for not allowing import twice but allowing reload() Steven D'Aprano <steve@pearwood.info> - 2016-03-10 00:53 +1100
    Reason for not allowing import twice but allowing reload() Rustom Mody <rustompmody@gmail.com> - 2016-02-29 05:51 -0800
      Re: Reason for not allowing import twice but allowing reload() alien2utoo@gmail.com - 2016-02-29 07:13 -0800
    Re: Reason for not allowing import twice but allowing reload() Terry Reedy <tjreedy@udel.edu> - 2016-03-01 02:04 -0500
  Re: Reason for not allowing import twice but allowing reload() alien2utoo@gmail.com - 2016-03-06 00:20 -0800
    Re: Reason for not allowing import twice but allowing reload() Steven D'Aprano <steve@pearwood.info> - 2016-03-07 01:50 +1100
  Re: Reason for not allowing import twice but allowing reload() alien2utoo@gmail.com - 2016-03-06 00:31 -0800

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