usecase

The concern is documenting the how to round the values, coming from writing the procedure for finding square root that returns saying

Fail: assert 3.00009155413138 == 3

1. steps

  • there is a lot of rounding strategies, at the moment I am using the truncate method
def truncate(n, decimals=3):
    multiplier = 10 ** decimals
    return int(n * multiplier) / multiplier
  • 3.00009155413138 → 3.000 and the test passes there

2. sources