Re: Help with python functions?

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Date	Tue, 24 Sep 2013 18:18:04 +0100
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On 24/09/2013 17:53, giacomo boffi wrote:
> kjakupak@gmail.com writes:
>
>> def temp(T, from_unit, to_unit):
>>     conversion_table = {('c', 'k'):lambda x: x + 273.15,
>>                         ('c', 'f'):lambda x: (x * (9.0/5)) + 32,
>>                         ('k', 'c'):lambda x: x - 273.15,
>>                         ('k', 'f'):lambda x: (x * (9.0/5)) - 459.67,
>>                         ('f', 'c'):lambda x: (x - 32) * (5.0/9),
>>                         ('f', 'k'):lambda x: (x + 459.67) * (5.0/9)}
>>     f = conversion_table[(from_unit.lower(), to_unit.lower())]
>>     return f(T)
>>
>> Would this be correct?
>
> not always:
>
>>>> temp(-300.0, 'c', 'k')
> -26.850000000000023
>>>>
>
In other words, it depends what you mean by 'correct'.

Zero Kelvin ("Absolute Zero") is the lowest possible temperature; in
reality there's no such temperature as -300°C.

Thread

Help with python functions? kjakupak@gmail.com - 2013-09-23 05:57 -0700
  Re: Help with python functions? Roy Smith <roy@panix.com> - 2013-09-23 09:11 -0400
  Re: Help with python functions? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-09-23 13:56 +0000
    Re: Help with python functions? kjakupak@gmail.com - 2013-09-23 15:32 -0700
      Re: Help with python functions? Terry Reedy <tjreedy@udel.edu> - 2013-09-23 18:48 -0400
      Re: Help with python functions? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-09-24 03:08 +0000
      Re: Help with python functions? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-09-24 03:17 +0000
      Re: Help with python functions? giacomo boffi <pecore@pascolo.net> - 2013-09-24 18:53 +0200
        Re: Help with python functions? MRAB <python@mrabarnett.plus.com> - 2013-09-24 18:18 +0100
    Re: Help with python functions? kjakupak@gmail.com - 2013-09-23 15:55 -0700
      Re: Help with python functions? Dave Angel <davea@davea.name> - 2013-09-24 00:07 +0000
        Re: Help with python functions? kjakupak@gmail.com - 2013-09-23 18:23 -0700
          Re: Help with python functions? Dave Angel <davea@davea.name> - 2013-09-24 03:52 +0000
      Re: Help with python functions? Denis McMahon <denismfmcmahon@gmail.com> - 2013-09-24 02:12 +0000
        Re: Help with python functions? kjakupak@gmail.com - 2013-09-23 19:40 -0700
          Re: Help with python functions? Denis McMahon <denismfmcmahon@gmail.com> - 2013-09-24 14:51 +0000
            Re: Help with python functions? Denis McMahon <denismfmcmahon@gmail.com> - 2013-09-24 19:42 +0000
              Re: Help with python functions? kjakupak@gmail.com - 2013-10-01 10:53 -0700
                Re: Help with python functions? random832@fastmail.us - 2013-10-01 15:02 -0400
                Re: Help with python functions? Denis McMahon <denismfmcmahon@gmail.com> - 2013-10-01 21:45 +0000
                Re: Help with python functions? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-10-01 19:19 -0400
      Re: Help with python functions? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-09-24 03:15 +0000
        Re: Help with python functions? Denis McMahon <denismfmcmahon@gmail.com> - 2013-09-24 15:02 +0000

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