Question

How to get an accurate floating point sum of values from a list in Python

Answer 1

import math

List = [-34, -12, 99, -51, 12]

print(math.fsum(List))


'''
run:

14.0

'''

 

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Answer 2

import math

List = [-34.3, -12.1, 99.9, -51.6, 12.5]

print(math.fsum(List))


'''
run:

14.400000000000007

'''

 

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Answer 3

import math

print(math.fsum([-34.3, -12.1, 99.9, -51.6, 12.9]))


'''
run:

14.800000000000008

'''

 

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