F-string in Python ":.3f"

Question

I'm reading this textbook called "Practical Statistics for Data Scientists" and this :.3f keeps getting used in almost every f-string. What does :.3f mean? My guess is it has something to do with floating point numbers.

Example:

 {house_lm_factor.intercept_:.3f}

*"format this value as a **f**loat to **3** decimal places"* — user2390182, Oct 18 '21 at 11:27
Please se [Format Specification Mini-Language](https://docs.python.org/3/library/string.html#format-specification-mini-language) — dawg, Oct 18 '21 at 11:33

score 0 · Accepted Answer · answered Oct 18 '21 at 11:28

0

This is show you how many number are printing:

>>> import math
>>> flt = math.pi
>>> f'{flt:.3f}'
'3.142'

>>> f'{flt:.5f}'
'3.14159'

>>> f'{flt:.10f}'
'3.1415926536'

answered Oct 18 '21 at 11:28

I'mahdi

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F-string in Python ":.3f"

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