str.format rounding to the left of the decimal

[ClassicalSoul]

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

1 2 3

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

1 2 3

>>> 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

[ichabod801]

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.

[perfringo]

Probably you should round before displaying:

1 2 3 4 5

>>> 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'