Module peprock.models.unit

Unit of measurement model.

See https://en.wikipedia.org/wiki/Unit_of_measurement

Examples

>>> Unit.ohm.symbol
'Ω'

>>> Unit("W")
<Unit.watt: 'W'>

Classes

class Unit (*args, **kwds)

Expand source code

class Unit(enum.Enum):
    """Unit Enum with symbol."""

    # metric units, see https://en.wikipedia.org/wiki/List_of_metric_units
    one = "1"  # unit of a quantity of dimension one
    second = "s"  # unit of time
    metre = "m"  # unit of length
    gram = "g"  # unit of mass (actually kilogram in SI)
    ampere = "A"  # unit of electric current
    kelvin = "K"  # unit of thermodynamic temperature
    mole = "mol"  # unit of amount of substance
    candela = "cd"  # unit of luminous intensity
    hertz = "Hz"  # equal to one reciprocal second
    radian = "rad"  # equal to one
    steradian = "sr"  # equal to one
    newton = "N"  # equal to one kilogram-metre per second squared
    pascal = "Pa"  # equal to one newton per square metre
    joule = "J"  # equal to one newton-metre
    watt = "W"  # equal to one joule per second
    coulomb = "C"  # equal to one ampere second
    volt = "V"  # equal to one joule per coulomb
    weber = "Wb"  # equal to one volt-second
    tesla = "T"  # equal to one weber per square metre
    farad = "F"  # equal to one coulomb per volt
    ohm = "Ω"  # equal to one volt per ampere
    siemens = "S"  # equal to one ampere per volt
    henry = "H"  # equal to one volt-second per ampere
    # degree Celsius (°C) is equal to one kelvin
    lumen = "lm"  # equal to one candela-steradian
    lux = "lx"  # equal to one lumen per square metre
    becquerel = "Bq"  # equal to one reciprocal second
    gray = "Gy"  # equal to one joule per kilogram
    sievert = "Sv"  # equal to one joule per kilogram
    katal = "kat"  # equal to one mole per second

    @functools.cached_property
    def symbol(self: Unit) -> str:
        """Get the unit symbol."""
        return self.value

Unit Enum with symbol.

Ancestors

• enum.Enum

Class variables

var ampere

The type of the None singleton.

var becquerel

The type of the None singleton.

var candela

The type of the None singleton.

var coulomb

The type of the None singleton.

var farad

The type of the None singleton.

var gram

The type of the None singleton.

var gray

The type of the None singleton.

var henry

The type of the None singleton.

var hertz

The type of the None singleton.

var joule

The type of the None singleton.

var katal

The type of the None singleton.

var kelvin

The type of the None singleton.

var lumen

The type of the None singleton.

var lux

The type of the None singleton.

var metre

The type of the None singleton.

var mole

The type of the None singleton.

var newton

The type of the None singleton.

var ohm

The type of the None singleton.

var one

The type of the None singleton.

var pascal

The type of the None singleton.

var radian

The type of the None singleton.

var second

The type of the None singleton.

var siemens

The type of the None singleton.

var sievert

The type of the None singleton.

var steradian

The type of the None singleton.

var tesla

The type of the None singleton.

var volt

The type of the None singleton.

var watt

The type of the None singleton.

var weber

The type of the None singleton.

Instance variables

var symbol : str

Expand source code

@functools.cached_property
def symbol(self: Unit) -> str:
    """Get the unit symbol."""
    return self.value

Get the unit symbol.