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Groups > comp.lang.python > #80984

Re: caught in the import web again

From Dave Angel <davea@davea.name>
Subject Re: caught in the import web again
Date 2014-11-17 17:17 -0500
Organization news.gmane.org
References <m48lfh$n88$1@dont-email.me> <mailman.15871.1416122062.18130.python-list@python.org> <m49omd$924$1@dont-email.me> <mailman.15947.1416208135.18130.python-list@python.org> <m4dki7$fn6$1@dont-email.me>
Newsgroups comp.lang.python
Message-ID <mailman.15962.1416262622.18130.python-list@python.org> (permalink)

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"Charles T. Smith" <cts.private.yahoo@gmail.com> Wrote in message:

> Well, I guess that's the definitive answer... the tips for delaying
> import are good, I'll try to leverage them.
> 
> I was hoping there would be a way to have python postpone evaluation
> similar to C's forward references.
> 

In a module that might get tangled in a cycle, avoid global code
 that depends on other modules.  Instead of putting such
 initialization at top level, put inside a function that gets
 called after all suspect imports are completed. (That function
 has global keywords ). 

Similarly avoid class attribute initialization at class level, if
 such initialization references higher level modules.

-- 
DaveA

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Thread

caught in the import web again "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2014-11-15 22:52 +0000
  Re: caught in the import web again Ben Finney <ben+python@benfinney.id.au> - 2014-11-16 10:43 +1100
  Re: caught in the import web again Denis McMahon <denismfmcmahon@gmail.com> - 2014-11-16 01:11 +0000
  Re: caught in the import web again dieter <dieter@handshake.de> - 2014-11-16 08:14 +0100
    Re: caught in the import web again "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2014-11-16 08:53 +0000
      Re: caught in the import web again Chris Angelico <rosuav@gmail.com> - 2014-11-16 20:20 +1100
      Re: caught in the import web again dieter <dieter@handshake.de> - 2014-11-17 08:08 +0100
        Re: caught in the import web again "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2014-11-17 20:07 +0000
          Re: caught in the import web again Dave Angel <davea@davea.name> - 2014-11-17 17:17 -0500
          Re: caught in the import web again Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-17 15:52 -0700
          Re: caught in the import web again Dave Angel <davea@davea.name> - 2014-11-17 20:20 -0500
          Re: caught in the import web again Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-18 08:28 -0700
          Re: caught in the import web again Dave Angel <davea@davea.name> - 2014-11-18 14:09 -0500
          Re: caught in the import web again Chris Angelico <rosuav@gmail.com> - 2014-11-19 07:18 +1100
          Re: caught in the import web again Dave Angel <davea@davea.name> - 2014-11-18 17:58 -0500
      Re: caught in the import web again Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-18 09:45 +1100
        Re: caught in the import web again Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-17 18:17 -0800
          Re: caught in the import web again Chris Angelico <rosuav@gmail.com> - 2014-11-18 13:25 +1100
          Re: caught in the import web again Steven D'Aprano <steve@pearwood.info> - 2014-11-18 07:13 +0000
        Re: caught in the import web again Michael Torrie <torriem@gmail.com> - 2014-11-18 00:00 -0700
          Re: caught in the import web again "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2014-11-18 09:13 +0000

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