The 'is' identity operator checking immutable values caution - comp.lang.python

Message from discussion The 'is' identity operator checking immutable values caution

castiro...@gmail.com

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More options May 13, 6:59 am

Newsgroups: comp.lang.python

From: castiro...@gmail.com

Date: Tue, 13 May 2008 03:59:56 -0700 (PDT)

Local: Tues, May 13 2008 6:59 am

Subject: Re: The 'is' identity operator checking immutable values caution

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On May 13, 5:37 am, Christian Heimes <li...@cheimes.de> wrote:

> wxPytho...@gmail.com schrieb:

> > We have to avoid the use of the 'is' identity operator with basic,
> > immutable values such as numbers and strings. The result is
> > unpredictable because of the way Python handles these objects
> > internally.

> You are confusing immutable objects with singletons. Never use "is" with
> strings and numbers.

> Christian

I was back on 'handle'. Handle internally, handle right. Gotta be 6
a.m.

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