Re: Putting the main program in a main function

Path	csiph.com!news.swapon.de!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail
From	Nobody <nobody@nowhere.invalid>
Newsgroups	comp.lang.python
Subject	Re: Putting the main program in a main function
Date	Mon, 14 Sep 2015 08:25:05 +0100
Organization	A noiseless patient Spider
Lines	16
Message-ID	<pan.2015.09.14.07.25.04.87000@nowhere.invalid> (permalink)
References	<55f673b3$0$3342$426a74cc@news.free.fr>
Mime-Version	1.0
Content-Type	text/plain; charset=UTF-8
Content-Transfer-Encoding	8bit
Injection-Info	mx02.eternal-september.org; posting-host="152d4dee6f95183c956ee6fa63d7e69f"; logging-data="17620"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1//NIN6x6b6SO26A+knuF/C"
User-Agent	Pan/0.14.2 (This is not a psychotic episode. It's a cleansing moment of clarity.)
Cancel-Lock	sha1:1CJCpyz8gli+TzJvxNtFCyH+B8w=
Xref	csiph.com comp.lang.python:96553

Show key headers only | View raw

On Mon, 14 Sep 2015 09:13:47 +0200, ast wrote:

> is it advised to always write programs like that ?

If global (module-scope) variables are initialised by main, then those
variables won't exist unless main() is run, which means that you can't use
it as a module, only as a script.

IMHO, global variables whose initial values can be evaluated without
depending upon or modifying external state should be initialised at the
top level.

If a module has variables which cannot be so initialised, the module needs
to provide an initialisation function which must be called explicitly by
any program or module which imports it.

Thread

Putting the main program in a main function "ast" <nomail@invalid.com> - 2015-09-14 09:13 +0200
  Re: Putting the main program in a main function Nobody <nobody@nowhere.invalid> - 2015-09-14 08:25 +0100
  Re: Putting the main program in a main function Ben Finney <ben+python@benfinney.id.au> - 2015-09-14 17:32 +1000

csiph-web