[EMAIL PROTECTED] wrote:
> Hi,
>
> I might understand why this does not work, but I am not convinced it
> should not - following:
>
> def nnn():
> print 'inside'
> yield 1
>
> def nn():
> def _nn():
> print 'inside'
> yield 1
>
> print 'before'
> _nn()
> print 'after'
>
>
> for i in nnn():
> print i
>
> for i in nn():
> print i
>
>
>
> gives results:
>
> $ python f.py
> inside
> 1
> before
> after
> Traceback (most recent call last):
> File "f.py", line 18, in ?
> for i in nn():
> TypeError: iteration over non-sequence
>
> while I would expect:
> $ python f.py
> inside
> 1
> before
> inside
> 1
> after
>
> Any insight?
>
> andy
>
In the commented line, you are only creating a generator. This is not
equivalent to calling its "next" function, i.e., nothing will be
"yielded" the way you have written it.
def nn():
def _nn():
print 'inside'
yield 1
print 'before'
_nn() # <== just makes a generator
print 'after'
James
--
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095
http://www.jamesstroud.com/
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