Constants

CIE

colour.constants

K_M Rounded maximum photopic luminous efficiency \(K_m\) value in \(lm\cdot W^{-1}\).
KP_M Rounded maximum scotopic luminous efficiency \(K^{\prime}_m\) value in \(lm\cdot W^{-1}\).

CODATA

colour.constants

AVOGADRO_CONSTANT Avogadro constant.
BOLTZMANN_CONSTANT Boltzmann constant.
LIGHT_SPEED Speed of light in vacuum.
PLANCK_CONSTANT Planck constant.

Common

colour.constants

DEFAULT_FLOAT_DTYPE alias of numpy.float64
EPSILON
FLOATING_POINT_NUMBER_PATTERN str(object=’‘) -> str str(bytes_or_buffer[, encoding[, errors]]) -> str
INTEGER_THRESHOLD Integer threshold value.