Peter Otten <[EMAIL PROTECTED]> wrote:
> Adam DePrince wrote:
>
> > def flatten( i ):
> > try:
> > i = i.__iter__()
> > while 1:
> > j = flatten( i.next() )
> > try:
> > while 1:
> > yield j.next()
> > except StopIteration:
> > pass
> > except AttributeError:
> > yield i
>
> While trying to break your code with a len() > 1 string I noted that strings
> don't feature an __iter__ attribute. Therefore obj.__iter__() is not
> equivalent to iter(obj) for strings. Do you (plural) know whether this is a
> CPython implementation accident or can be relied upon?
I'd like to know this too!
You can write the above as the shorter (and safer IMHO - it doesn't
catch any exceptions it shouldn't)
def flatten( i ):
if hasattr(i, "__iter__"):
for j in i:
for k in flatten(j):
yield k
else:
yield i
--
Nick Craig-Wood <[EMAIL PROTECTED]> -- http://www.craig-wood.com/nick
--
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