Pint and uncertainties

Pint attaches physical units to numbers; uncertainties propagates measurement errors.

Easy

import pint
u = pint.UnitRegistry()
(5 * u.volt / (220 * u.ohm)).to(u.milliampere)        # 22.7 mA
from uncertainties import ufloat
ufloat(10.0, 0.5) * ufloat(2.0, 0.1)                   # 20.0 ± 1.4

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