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Groups > comp.lang.python > #51552

Re: import syntax

From Neil Cerutti <neilc@norwich.edu>
Newsgroups comp.lang.python
Subject Re: import syntax
Date 2013-07-30 13:03 +0000
Organization Norwich University
Message-ID <b5prt4F240sU1@mid.individual.net> (permalink)
References <51F6C720.2020404@Gmail.com> <kt6i57$2ku$1@ger.gmane.org> <20130729152051.46003bcf@bigbox.christie.dr> <51F6CF36.7080702@Gmail.com> <mailman.5281.1375137506.3114.python-list@python.org>

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On 2013-07-29, Joshua Landau <joshua@landau.ws> wrote:
> Sure, just as one light is no brighter or dimmer than another
> when disregarding luminosity.
>
> As people have said, it improves diffs as well. It flows
> quicker into the "from module import things" form (which I oft
> prefer), too.
>
> When asking these questions, ask yourself "why would it
> *compile* differently? It wouldn't. Plus, premature
> optimisation is the root of all evil.
>
> 1) Write your code
> 2) If it's slow:
> 2a) Do you have time? If so:
> 2b) Is it important to speed up, or is the slowness not worth spending the
> hours fixing?
> 2c) Profile it to see what's actually slow
> 2d) Realise that the slow part is not what you thought it was
> 2e) Fix the bit that's slow (and nothing else)
> 2f) Repeat from 2
> 3) Write some more code

1a) Does it work?
1b) Can you prove it?

It's best to at least have some regression tests before you start
refactoring and optimizing.

-- 
Neil Cerutti

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Re: import syntax Joshua Landau <joshua@landau.ws> - 2013-07-29 23:37 +0100
  Re: import syntax Neil Cerutti <neilc@norwich.edu> - 2013-07-30 13:03 +0000

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