Greg Ewing wrote:
> Something is bothering me about this. In fact,
> it's bothering me a LOT. In the following, will
> f() work as a generator-function:
>
> def f():
> for i in range(5):
> g(i)
>
> def g(i):
> for j in range(10):
> yield i,j
>
> If I understand PEP255 correctly, this will *not*
> work.
No, it will not work. The title of PEP 255 is "Simple
Generators". What you want will require something like stackless
in order to get the C stack out of the way. That's a major
change to the Python internals. To make your example work you
need to do:
def f():
for i in range(5):
for j in g(i):
yield j
def g(i):
for j in range(10):
yield i,j
Stackless may still be in Python's future but no for 2.2.
Neil
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