This document describes the current stable version of Kombu (4.0). For development docs, go here.

Object/Property Utilities - kombu.utils.objects

Object Utilities.

class kombu.utils.objects.cached_property(fget=None, fset=None, fdel=None, doc=None)

Cached property descriptor.

Caches the return value of the get method on first call.

Examples

@cached_property
def connection(self):
    return Connection()

@connection.setter  # Prepares stored value
def connection(self, value):
    if value is None:
        raise TypeError('Connection must be a connection')
    return value

@connection.deleter
def connection(self, value):
    # Additional action to do at del(self.attr)
    if value is not None:
        print('Connection {0!r} deleted'.format(value)

deleter(fdel)

setter(fset)