strange list comprehension on generator

["Martin v. Löwis"]

> #this does not return the way I would expect. why?

You yield the very same list object all the times. So
when you make a later change, all earlier results will
get changed, too (since they are the same object).
Of course, it won't affect the terminal output, so you
don't see that the older values changed in the example
that you think works as expected.

HTH,
Martin