[Tutor] testing for "None"

[Remco Gerlich]

On  0, Sharriff Aina <NHYTRO@compuserve.com> wrote:
> Hi guys!
> 
> ## code start ##
> templinks = [("aa,None,cc,dd")] # from databse
> links = string.split(templinks[0],",")
> for x in links:
>     if x != None:
>         counter = counter + 1
>         print "<td>%d.&nbsp;</td>" %(counter)
>         print "<td>",
>         print x
>         print """
>         &nbsp;&nbsp;</td>
>        <td><input type="button" onclick="" value="edit"</td>
> </tr>
> <tr>
> """
>     else:
>          pass
> ## code end ##
> 
> can someone tell me why this code fails? I´m trying to print values that
> are not " None"

None of the values are None, they're all strings - "aa", "None", "cc" and
"dd".

You should be testing for the string "None", not the object None 
(if x != "None": ...).

-- 
Remco Gerlich