str.format rounding to the left of the decimal

str.format rounding to the left of the decimal - Printable Version

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str.format rounding to the left of the decimal - ClassicalSoul - Mar-26-2019

Hi, I was wondering how I could make string.format round to the left of the decimal.

>>> x = 4. 542412343
>>> '{0} rounded to {1} decimals is {2: .1f}'.format(x, 4, x) 
>>> 4.5

>>> x = 52137809
>>> '{0} rounded to {1} decimals is {2: ???}'.format(x, 4, x) 
>>> 50000000

Moreover, is there somewhere I could have accessed this information, like the help function?

Thanks

RE: str.format rounding to the left of the decimal - ichabod801 - Mar-26-2019

I do not believe that is possible. You would have to do some calculation on the number before string formatting. You can see the full format method syntax here.

RE: str.format rounding to the left of the decimal - perfringo - Mar-27-2019

Probably you should round before displaying:

>>> x = 52137809
>>> '{0} rounded to tens of millions is {1}'.format(x, round(x, -7))  # format method
'52137809 rounded to tens of millions is 50000000'
>>> f'{x} rounded to tens of millions is {round(x, -7)}'              # f-string
'52137809 rounded to tens of millions is 50000000'