Plz comment on this code

[Lawrence D'Oliveiro]

In message
<b4616683-ad1e-4fd2-9595-5386333b98f3 at y31g2000vbt.googlegroups.com>, Alex 
Willmer wrote:

> On Sep 19, 12:20 pm, Lawrence D'Oliveiro <l... at geek-
> central.gen.new_zealand> wrote:
>> In message
>> <fdd04662-0ae7-46a3-a7d3-d6bb00438... at j19g2000vbh.googlegroups.com>, Alex
>>
>> Willmer wrote:
>> > # NB Constants are by convention ALL_CAPS
>>
>> SAYS_WHO?
> 
> Says PEP 8:
> 
> Constants
> 
>        Constants are usually declared on a module level and written in all
>        capital letters with underscores separating words.  Examples 
include
>        MAX_OVERFLOW and TOTAL.
> 
> -- http://www.python.org/dev/peps/pep-0008/

WHAT_IF_SOMETHING_IS_INITIALLY_CONSTANT,_BUT_LATER_BECOMES_A_CONFIG_VARIABLE,_OR_VICE_VERSA,_DOES_IT_NEED_TO_CHANGE_ITS_NAME?