Victor Subervi wrote:
> On Mon, Dec 28, 2009 at 1:41 PM, MRAB <pyt...@mrabarnett.plus.com
> <mailto:pyt...@mrabarnett.plus.com>> wrote:
>
> Victor Subervi wrote:
>
> Hi;
> I'm using python 2.4.3 which apparently requires that I import Set:
> from sets import Set
> I've done this. In another script I successfully manipulated
> MySQL sets by so doing. Here's the code snippet from the script
> where I was able to call the elements in a for loop:
>
> if isinstance(colValue[0], (str, int, float, long,
> complex, unicode, list, buffer, xrange, tuple)):
> pass
> else:
> try:
> html = "<b>%s</b>: <select name='%s'>" % (col, col)
> notSet = 0
> for itm in colValue[0]:
> try:
> color, number = itm.split(':')
> html += "<option name='%s'>%s</option>" % (itm,
> color)
> except:
>
>
> DON'T USE BARE EXCEPTS!
>
> (There are 2 in your code.)
>
>
> There are times when they are *necessary*.
>
Perhaps so, although it's extremely difficult to think of one since the
exceptions were rationalised. Do you *really* want to catch the
exception that occurs when the user tries to stop the program with a
Control-C? Usually nowadays you want
except Exception:
as the "widest" specification. You don't *normally* want to catch
SystemExit, KeyboardInterrupt or GeneratorException.
>
>
> html += "<option name='%s'>%s</option>" % (itm,
> itm)
> However, when I try that in my current script, the script
> fails. It throws no error, but rather just quits printing to the
> screen. Here's the code snippet:
>
> elif types[x][0:3] == 'set':
> for f in field:
> print '<td>%s</td>\n' % (field)
> else:
> print '<td>%s</td>\n' % (field)
>
> [snip]
>
> You're printing the entire field for each value in the field. Is this
> intentional?
>
>
> It doesn't matter. The code ceases to execute with the line:
>
> for f in field:
> beno
>
Well it looks to me like types[x][0:3] == 'set' and f is empty. That
wouldn't produce any printed output.
regards
Steve
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