defining classes within loops?

[Roy Smith]

The documentation for the "continue" statement says:

> continue may only occur syntactically nested in a for or while loop,
> but not nested in a function or class definition

Just out of curiosity, how many people have ever written a function or 
class definition nested inside a loop?  Seems like sort of a strange thing 
to do, although I suppose it might be useful in some situations.