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

Path csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From Terry Reedy <tjreedy@udel.edu>
Newsgroups comp.lang.python
Subject Re: Reason for not allowing import twice but allowing reload()
Date Tue, 1 Mar 2016 02:04:35 -0500
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On 2/29/2016 8:22 AM, alien2utoo@gmail.com wrote:
> Hello Rustom,
>
> F5 in Idle restarts the Python interpreter (that's what my impression is).

More exactly, IDLE runs user code in a separate process from the one 
that runs the IDLE gui.  Restarting means that the existing user process 
is terminated and a new one started.  This is easier than trying to 
'clean up' the existing process.

If you start python with '> python' in a terminal, then restarting the 
interactive interpreter means '>>> quit' at the interactive prompt 
followed by "> python" in the console.  You do the equivalent in IDLE 
Shell with 'control-F6' or 'Shell -> Restart Shell.

F5 when editing path/file.py replaces the command 'python' with 'cd 
path' followed by 'python -i file.py'

Maybe I should add something to the IDLE doc for people familiar with 
using python in a console.  (Most beginners are not.)

> Whatever you have done earlier at Idle prompt (in Idle session)
 > before F5 is gone after F5.

Yes, the same as if you quit().  A change I would like to make sometime 
is to have F5 run the file is a new user process without killing the old 
one, so one does not loose work done in Shell.

-- 
Terry Jan Reedy

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Thread

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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