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

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

Marco Mariani

More options May 13, 6:26 am

Newsgroups: comp.lang.python

From: Marco Mariani <ma...@sferacarta.com>

Date: Tue, 13 May 2008 12:26:13 +0200

Local: Tues, May 13 2008 6:26 am

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

  Reply to author
  |
  Forward
  | Print
  | View thread
  | Show original
  | Report this message
  | Find messages by this author
  

wxPytho...@gmail.com wrote:
> We have to avoid the use of the 'is' identity operator with basic,
> immutable values such as numbers and strings.

I'm glad for you. Did you really write checks like "if foo is 27" ?

The point is, you have to learn technologies to use them. It's not like
technologies learn you (not even in soviet Russia)

> How is with this issue in Python 3.0? Is it fixed?

There is nothing to fix.

> Does Python handle this things properly now?

It always did.

Reply to author Forward