With respect Georg, given that the behaviour won't be changed, the 
documentation is simply *wrong*. It's not a matter of telling 
people "don't do this" -- somebody, somewhere, is going to rely on the 
documented behaviour. The docs make the clear promise that, and I 
quote, "Using iteritems() while adding or deleting entries in the 
dictionary will raise a RuntimeError", but that's not what happens. 
The actual behaviour is undefined.