Pint
https://github.com/hgrecco/pint/blob/master/pint/default_en.txtÂ
import pint
ureg = pint.UnitRegistry()
Q_ = ureg.Quantity
ureg.define('standard_gravity = ')
t = Q_(20, ureg.degC)
t.to('degK')
d = 90 * ureg.deg
np.deg2rad(d)
np.sin(np.deg2rad(d))
a = 1 * ureg.decam
l_m = l * ureg.m
l_nm = l_m.to("nautical_mile")
s = 1 * ureg.knot
s = s.to('meter/second')
s.magnitude
s = s.to('nautical_mile/hour')
t = 1 * ureg.hour
d = s * t
distance = 24.0 * ureg.nautical_mile
w_kg = 1 * ureg.kg
w_lb = w_kg.to("lb")