Precision from Counts

Problem

Precision is the fraction of predicted positives that are correct: TP / (TP + FP). Return 0.0 when the denominator is zero.

Given the counts, return the precision.

Hint

It answers: of the alarms raised, how many were real?

case 1

in: [8,2]

expected: 0.8

case 2

in: [0,5]

expected: 0

case 3

in: [3,0]

expected: 1

Starter codePython

def precision_from_counts(tp, fp):
    # Your code here
    pass

3 test cases · run your code against them in the editor