Stocks

[RCdiy]

For stock prices I’m trying to display 3 significant figures on an oled display as follows 1234.56 ~ 1230 (no decimal) 123.456 ~ 123 12.3456 ~ 12.3 1.2345 ~ 1.23 0.1234 ~ 0.123 How do I do this without doing 4 checks? For example def my_sigfig(a): x = round(a , sigfig=3) If x >= 100 then result int(x) If x >= 10 then result int(x10)/10 If x >= 1 then result int(x100)/100 If x >= 0.1 then result int(x*1000)/1000

[MikeBusuttil]

Hi RCdiy, you shouldn't have to make any checks, the sigfig library is meant to do that for you. Make sure you have the sigfig library installed (see instructions here: https://sigfig.readthedocs.io/en/latest/install.html ); and make sure you're not using float as the results could be confusing; then you could do the following within your program (without the ">"s):

>>> from sigfig import round
>>> round(1234.56, 3, type=str)
'1230'
>>> round(str(123.456), 3)
'123'
>>> round(str(12.3456), 3)
'12.3'
>>> round(str(1.23456), 3)
'1.23'
>>> round(str(.123456), 3)
'0.123'

Python's default float implementation shown here can make your results appear misleading as it will add zeros after the decimal point in some cases:

>>> from sigfig import round
>>> round(1234.56, 3)
1230.0
>>> round(123.456, 3)
123.0
>>> round(12.3456, 3)
12.3
>>> round(1.23456, 3)
1.23
>>> round(.123456, 3)
0.123

Hope that helps

[RCdiy]

Thanks. I wasn’t using str.