__rlshift__, __ror__ in Python

Question

I noticed that this recipe seems to use __rlshift__, __ror__ like operators. But, they aren't in the documentation! Can anyone explain these and perhaps point to some docs?

Answer 1

http://docs.python.org/3.1/reference/datamodel.html?highlight=rlshift

__rlshift__ is the swapped operands version of __lshift__, used when the right-hand operand supports the operation but the left-hand operand doesn't.