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Groups > comp.lang.python > #54711
| Date | 2013-09-24 18:18 +0100 |
|---|---|
| From | MRAB <python@mrabarnett.plus.com> |
| Subject | Re: Help with python functions? |
| References | <e484b709-1287-4e6a-bc43-05f02a608579@googlegroups.com> <5240489d$0$29992$c3e8da3$5496439d@news.astraweb.com> <66aa7d75-a819-4b21-9f1e-7ad265996150@googlegroups.com> <87txhap3e7.fsf@pascolo.net> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.301.1380043085.18130.python-list@python.org> (permalink) |
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.
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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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