Define float precision while taking input in python3

Question

I want to define the precision of a float while taking it as an input

NGAS=float(input("enter a number with 3 decimal places"))

instead of mentioning the 3 decimal places I want to do the equivalent of

print('%.3f%' % ESTART)

while taking the input. Since, it affects my calculations.

Changing the print representation of a float won't impact your calculations. float is float, you don't get "3 decimal place floats". If you need to do decimal maths, you may need to use decimal module. This may be an XY problem. — jpp
– jpp, Commented Jun 8, 2018 at 11:20

Mureinik · Accepted Answer · 2018-06-08 11:22:50Z

1

You can round the inputted number:

ngas = round(float(input("enter a number: ")), 3)

answered Jun 8, 2018 at 11:22

Mureinik

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1 Comment

jpp Over a year ago

While this answers OP's question, it doesn't address the potentially error-prone Since, it affects my calculations part. Your rounded float is still a float.

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