qudi.util.descriptors.ReadOnlyAttribute

class qudi.util.descriptors.ReadOnlyAttribute(default: ~typing.Any | None = <object object>)[source]

Extension of DefaultAttribute to be read-only. A non-default value can be set by calling “set_value(instance, value)” on the descriptor instance.

Example usage:

class Test:: variable_a = ReadOnlyAttribute(42) variable_b = ReadOnlyAttribute() def __init__(self):

self.__class__.variable_b.set_value(self, self.variable_a - 42) assert self.variable_a == 42 assert self.variable_b == 0 # The following would raise an AttributeError # self.variable_b = 0

Methods

`__init__`([default])
`set_value`(instance, value)