Convert from numbers to letters

[Bill Mill]

On 5/19/05, Peter Otten <__peter__ at web.de> wrote:
> Bill Mill wrote:
> 
> >> Traceback (most recent call last):
> >>File"<stdin>",line1,in?
> >> NameError: name 'sorted' is not defined
> >>
> >> I think you're probably using 2.4 ??
> >
> > Yes, sorted() is new in python 2.4 .You could use a very lightly
> > tested pure-python partial replacement:
> 
> By the way, sorted() can be removed from your original post.
> 
> Code has no effect :-)

I'm gonna go ahead and disagree with you:

>>> sorted([''.join((x, y)) for x in alpha \
...    for y in [''] + [z for z in alpha]], key=len) == \
... [''.join((x,y)) for x in alpha for y in [''] + [z for z in alpha]]
False

If you want to see why, here's a small example:

>>> alpha = 'abc'
>>> [''.join((x,y)) for x in alpha for y in [''] + [z for z in alpha]]
['a', 'aa', 'ab', 'ac', 'b', 'ba', 'bb', 'bc', 'c', 'ca', 'cb', 'cc']

>>> sorted([''.join((x,y)) for x in alpha for y in [''] + [z for z in alpha]],
key=len)
['a', 'b', 'c', 'aa', 'ab', 'ac', 'ba', 'bb', 'bc', 'ca', 'cb', 'cc']

Peace
Bill Mill
bill.mill at gmail.com