Automatic import ?
aahz at pythoncraft.com
Sat Apr 10 19:48:30 CEST 2010
In article <4bac361d$0$8840$c3e8da3 at news.astraweb.com>,
Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> wrote:
>On Thu, 25 Mar 2010 18:03:58 -0700, C. B. wrote:
>> from mymodule import AAA
>> from mymodule import BBB
>> a = AAA(BBB()))
>> But, as there is no case where AAA can be used without BBB, I would like
>> to avoid importing BBB in my Python scripts when I already import AAA.
>Since AAA must take an argument of BBB, then give it a default:
># in mymodule
That would frequently give wrong results unless BBB is explicitly
designed to create immutable instances. I strongly suggest doing the
usual mutable dance:
if arg is None:
arg = BBB()
Aahz (aahz at pythoncraft.com) <*> http://www.pythoncraft.com/
"It is easier to optimize correct code than to correct optimized code."
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