Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #78621

Re: Keepin constants, configuration values, etc. in Python - dedicated module or what?

Show key headers only | View raw

On 09/30/2014 10:55 AM, cl@isbd.net wrote:
> Dave Angel <davea@davea.name> wrote:
 >>   ....
>>   name. And presumably you never remove an old name from the
>>   config.
>>
> The only things really likely to change (and may change regularly) are
> the conversion factors, drifting voltage references etc. will
> inevitably require these to be recalibrated every so often.  Other
> than that it's just typos or me deciding to change the name of
> something.
>

Right there you have an important design decision.  You then presumably 
have to have a way that each particular data point can record what 
configuration it's associated with. If you just change the calibration 
data externally, then all the old records are invalidated.

>
>> More troublesome is adding a new kind of data. You have to decide
>>   whether it's worth generalizing the code to anticipate the
>>   change,  or just admit that the code will grow at that point and
>>   that old code won't deal with the new data.
>>
> There's a separate module for each input type (just ADC and 1-wire at
> the moment), I don't anticipate any more though I suppose there might
> be digital inputs one day.  So a configuration [file] for each type
> seems to make sense, generalising it would be more trouble than it's
> worth I think.
>
>



-- 
DaveA

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Keepin constants, configuration values, etc. in Python - dedicated module or what? cl@isbd.net - 2014-09-30 12:35 +0100
  Re:Keepin constants, configuration values, etc. in Python - dedicated module or what? Dave Angel <davea@davea.name> - 2014-09-30 09:14 -0400
    Re: Re:Keepin constants, configuration values, etc. in Python - dedicated module or what? cl@isbd.net - 2014-09-30 15:55 +0100
      Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Dave Angel <d@davea.name> - 2014-10-02 14:50 -0400
  Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Rustom Mody <rustompmody@gmail.com> - 2014-09-30 06:15 -0700
    Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? cl@isbd.net - 2014-09-30 16:06 +0100
      Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? jkn <jkn_gg@nicorp.f9.co.uk> - 2014-09-30 08:59 -0700
      Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Rustom Mody <rustompmody@gmail.com> - 2014-09-30 09:39 -0700
        Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Chris Angelico <rosuav@gmail.com> - 2014-10-01 02:51 +1000
          Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Rustom Mody <rustompmody@gmail.com> - 2014-09-30 10:01 -0700
            Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Chris Angelico <rosuav@gmail.com> - 2014-10-01 03:15 +1000
              Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Rustom Mody <rustompmody@gmail.com> - 2014-09-30 10:31 -0700
                Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Chris Angelico <rosuav@gmail.com> - 2014-10-01 03:46 +1000
              Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-10-02 00:49 +1000
                Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Chris Angelico <rosuav@gmail.com> - 2014-10-02 00:55 +1000
            Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? cl@isbd.net - 2014-09-30 18:30 +0100
              Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Chris Angelico <rosuav@gmail.com> - 2014-10-01 03:49 +1000
        Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? Rustom Mody <rustompmody@gmail.com> - 2014-10-16 18:24 -0700
  Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? "Neil D. Cerutti" <neilc@norwich.edu> - 2014-09-30 12:16 -0400
    Re: Keepin constants, configuration values, etc. in Python - dedicated module or what? cl@isbd.net - 2014-09-30 18:50 +0100

csiph-web