DerivedUnit

class justunits.DerivedUnit(*sub_units)

Parameters

• *sub_units –

• target_style –

Examples

DerivedUnit are comparable and hashable. The order of units is neglected for the comparison resulting into a⋅b == b⋅a.

>>> import justunits
>>> energy = justunits.from_string("N*m")
>>> ygrene = justunits.from_string("m*N")
>>> energy == ygrene
True

DerivedUnit is hashable like AUnit to support usage as key within within mappings. In the current implementation the order of internal units is neglected. Meaning a⋅b and b⋅a are considered being the same.

>>> hash(energy) == hash(ygrene)
True

>>> map = {energy: "energy"}
>>> map[ygrene]
'energy'

>>> pressure = justunits.from_string("N/m")
>>> pressure != energy
True

>>> hash(pressure) == hash(energy)
False