looping through a list

[Steve Holden]

"Hugh" <h.e.w.frater at cs.cf.ac.uk> wrote in message
news:e2e9e807.0204261611.7514b387 at posting.google.com...
> I need help with a really simple algorithm that I can't get my head
> around. I am looping through the list returned by a dcoracle2 execute
> statement and need to add each item of data surrounded by some HTML
> table tags to a string called text which I then pass to a page
> generation method. At the moment I've got this:
>
> result = c.fetchone()

Remember that the result will be a tuple. It will, therefore, never be equal
to "". When empty it will be equal to ().

>   if (result != ""):
>     i=0
>     text = '<tr width = "80%" align = "center">'
>     while (i != len(result)+1):
>       i = i + 1
>       text = text + '<td align = "center" valign =
> "top">'+str(result[int(i)])  +'</td>'
>     text = text + "</tr>"
>     page.generate("","",sessionID,text)
>   else:
>     text = '<h4>No items found</h4>'
>     page.generate("","",sessionID,text)
>
If would seem simpler to do the following:

if result:
    text = '''
    <tr width="80%%" align="center">
    %s
    </tr>''' % "\n    ".join(['<td align="center" valig="top">%s</td>' % c
for c in result])

>
> At the moment, it keeps saying list index out of bounds and I don't
> know where I'm going wrong. I've tried all sorts of things in the
> While statement and still can't get it going.
>
Not using a while statement will cure all those blues :-)

regards
 Steve
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