[Tutor] When to use classes

[Steven D'Aprano]

On Sat, Aug 19, 2017 at 10:52:45AM -0500, boB Stepp wrote:

> This thought had occurred to me.  Sometimes I wish there was a
> mechanism in Python to create a binding to data where both were
> unchangeable/immutable.  Yes, I could use an immutable data type, but
> if I bind an identifier to it that I want to *only* identify that
> data, AFAIK it will always be possible for that identifier to be
> rebound to a different object.

A "constant", in the sense that once bound, it cannot be unbound or 
re-bound to another object.

There are some tricky hacks you can use to get something almost like a 
constant, e.g.

https://code.activestate.com/recipes/65207-constants-in-python/

but without language support they're probably not worth bothering with.


-- 
Steve