Can one output something other than 'nan' for not a number values?
Grant Edwards
grant.b.edwards at gmail.com
Sat Feb 17 17:55:49 EST 2024
On 2024-02-17, Cameron Simpson via Python-list <python-list at python.org> wrote:
> On 16Feb2024 22:12, Chris Green <cl at isbd.net> wrote:
>>I'm looking for a simple way to make NaN values output as something
>>like '-' or even just a space instead of the string 'nan'. [...]
>>
>> Battery Voltages and Currents
>> Leisure Battery - 12.42 volts -0.52 Amps
>> Starter Battery - nan volts nan Amps
>>
>>What I would like is for those 'nan' strings to be just a '-' or
>>something similar.
>
> The simplest thing is probably just a function writing it how you want
> it:
>
> def float_s(f):
> if isnan(f):
> return "-"
> return str(f)
He's obviouisly using a formatting feature to control columns and
decimal places, so I doubt that 'str(f)' is going to meet the need.
I tried monkey-patching the __format__ method of the 'float' type, but
it's immutable -- so that didn't work.
Is float.__format__() what's used by f-strings, the % operator, etc.?
--
Grant
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