attr.setters Namespace Reference

Functions
	pipe (*setters)
	frozen (_, __, ___)
	validate (instance, attrib, new_value)
	convert (instance, attrib, new_value)

Variables
	NO_OP = object()

Detailed Description

Commonly used hooks for on_setattr.

Function Documentation

convert()

attr.setters.convert	(		instance,
			attrib,
			new_value
	)

Run *attrib*'s converter -- if it has one -- on *new_value* and return the
result.

.. versionadded:: 20.1.0

frozen()

attr.setters.frozen	(		_,
			__,
			___
	)

Prevent an attribute to be modified.

.. versionadded:: 20.1.0

pipe()

attr.setters.pipe

(

*

setters

)

Run all *setters* and return the return value of the last one.

.. versionadded:: 20.1.0

validate()

attr.setters.validate	(		instance,
			attrib,
			new_value
	)

Run *attrib*'s validator on *new_value* if it has one.

.. versionadded:: 20.1.0