On 20/02/24 01:04, Chris Green via Python-list wrote:
dn <pythonl...@danceswithmice.info> wrote:
On 18/02/24 09:53, Grant Edwards via Python-list wrote:
On 2024-02-17, Cameron Simpson via Python-list <python-list@python.org> wrote:
On 16Feb2024 22:12, Chris Green <c...@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)
and then use eg:
print(f'value is {float_s(value)}')
or whatever fits your code.
Except he's obviously using some sort of formatting to control the
number of columns and decimal places, so 'str(f)' is not going to cut
it. Is the basic floating point number formatting functionality seen
when using f-strings or '%' operator part of the float type or is it
part of the f-string and % operator?
It's part of the PSL's string library: "Format Specification
Mini-Language"
https://docs.python.org/3/library/string.html#format-specification-mini-language
Has the OP stated if we're talking 'Python' or numpy, pandas, ...?
Just python, on a Raspberry Pi, so currently Python 3.9.2.
Concur with earlier advice (and assuming is only a consideration during
output) - use if.
Alternately, encode appropriately during the data-capture phase.
--
Regards,
=dn
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