= @property =

{{{#!highlight python
class Orchestration(object):
    def __init__(self):
        self._choreo1 = None
        self._choreo2 = None


    @property
    def choreo1(self):
        if self._choreo1 is None:
            print 'Connecting to Choreo1'
            self._choreo1 = Choreo1()

        return self._choreo1


    @choreo1.setter
    def choreo1(self, value):
        msg = 'Setting to %s does not make sense in this example' % value
        raise AttributeError(msg)


    @choreo1.deleter
    def choreo1(self):
        raise AttributeError('Deleting neither')


    @property
    def choreo2(self):
        if self._choreo2 is None:
            print 'Connecting to Choreo2'
            self._choreo2 = Choreo2()

        return self._choreo2


    def bla(self):
        self.choreo1.foo()
        self.choreo1.bar()
        self.choreo2.gurki()


    def blubb(self):
        self.choreo2.gurki()



class Choreo1(object):
    def foo(self):
        print 'Doing foo'

    def bar(self):
        print 'Doing bar'


class Choreo2(object):
    def gurki(self):
        print 'Doing gurki'


def main():
    o = Orchestration()
    print 'Do bla'
    o.bla()
    print 'Done with bla'

    print

    o = Orchestration()
    print 'Do blubb'
    o.blubb()
    print 'Done with blubb'


if __name__ == '__main__':
    main()
}}}