Colors for Rows

[Victor Subervi]

On Tue, Apr 29, 2008 at 11:11 AM, D'Arcy J.M. Cain <darcy at druid.net> wrote:

> On Tue, 29 Apr 2008 09:33:32 -0500
> "Victor Subervi" <victorsubervi at gmail.com> wrote:
> > why doesn't this work?
>
> First, let me remove some blank lines to reduce scrolling.
>
> > z = 3
> >
> > for d in (1,2,3,4,5,6):
>
> I changed id to a sequence so that the example actually runs.  Please
> run your examples first and cut and paste them into the message after
> you are sure that it runs.


Not sure what you mean here. The example runs. It prints out <tr
bgcolor="#ffffff"> every time.


>
>
> >   z += 1
> >
> >   if z % 4 == 0:
> >     bg = '#ffffff'
> >   elif z % 4 == 1:
> >     bg = '#d2d2d2'
> >   elif z % 4 == 2:
> >     bg = '#F6E5DF'
> >   else:
> >     bg = '#EAF8D5'
> >
> > try:
> >   print '<tr bgcolor="%s">\n' % bg
> > except:
> >   print '<tr>\n'
> >
> > It never increments z! Yet, if I print z, it will increment and change
> the
> > bgcolor! Why?!
>
> I am not entirely sure what you are trying to do here.  First, what
> error condition are you expecting in your try statement.  Second, don't
> you want the print clause, with or without the try/except, in the
> loop.  I assume that you want to print a line for each member of your
> sequence in alternating colours but this only prints for the last one.
> Try this:
>
> z = 3
>
> for d in (1,2,3,4,5,6):
>  z += 1
>
>  if z % 4 == 0:
>    bg = '#ffffff'
>  elif z % 4 == 1:
>    bg = '#d2d2d2'
>  elif z % 4 == 2:
>    bg = '#F6E5DF'
>  else:
>    bg = '#EAF8D5'
>
>  print '<tr bgcolor="%s">' % bg, d


Huh? You´re asking for one variable, then giving two! How´s that work?


>
>
> Or, tell us what you are trying to do.


I think you understand. I want the row color to alternate, every fourth row
color being the same (or a series of 4)


>
>
> In fact, you can replace all the tests and the print statement with
> this after defining bg as a list of the four colours:
>
>  print '<tr bgcolor="%s">' % bg[z % 4], d


I tried that just for fun. It gave a bg of ´f´. Again, how are you
incorporating d?
TIA,
Victor
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