Newbie question
Fredrik Lundh
fredrik at pythonware.com
Mon Jul 26 22:07:08 EDT 1999
Arnaldo <javanet at sinbad.net> wrote:
> I'm just trying out some examples from the book Learning Python and I run
> into a exercise that is not working for me.
> It's on page 95 , exercise 4b.
> This is the answer the book has
> ===========================================
> l = [1, 2, 4, 8, 16, 32, 64]
> x = 5
> i = 0
> while i < len(l):
> if 2 ** x == l[i]:
> print 'at index', i
> break
> i = i + 1
> else:
> print x , 'not found'
> ============================================
either you or the LP authors have messed up;
for the loop to ever terminate, the "i = i + 1"
statement should at the "while" level, not in-
side the "if" statement.
try changing the loop to:
...
while i < len(l):
if 2 ** x == l[i]:
print 'at index', i
break
i = i + 1
...
</F>
More information about the Python-list
mailing list