[Python-ideas] PEP for executing a module in a package containing relative imports

Aahz aahz at pythoncraft.com
Sat Apr 21 00:30:19 CEST 2007

On Fri, Apr 20, 2007, Brett Cannon wrote:
> On 4/20/07, Christian Heimes <lists at cheimes.de> wrote:
>> What about
>>     import sys
>>     if __name__ == sys.main:
>>         ...
>> You won't have to introduce a new global module var __name__ and it's
>> easy to understand for newbies and experienced developers. The code is
>> only executed when the name of the current module is equal to the
>> executed main module (sys.main).
>> IMO it's much less PIT...B then introducing __main__.
> True, but it does introduce an import for a module that may never be
> used if the module is not being executed.  That kind of sucks for
> minor performance reasons.
> But what do other people think?

Looks good to me!  sys is essentially guaranteed to be imported, so
you're only wasting a few cycles to bring it into the module namespace.
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

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