polymorphism w/out signatures?

[Peter Hansen]

Robin Munn wrote:

> Simon Brunning <simon at brunningonline.net> wrote:
> 
>>def setText(window, text, append=False):
>>    # Ensure that text is a list
>>    try:
>>        text + ''
>>        text = [text]
>>    except TypeError:
>>        pass
>>
>>    ... rest of funtion, which can assume that 'text' is a list
> 
> 
> That would be better with an "else:" clause:
> 
>     try:
>         text + ''
>     except TypeError:
>         pass
>     else:
>         test = [text]

Just to verify, you think it's better solely because
of the improved readability, right?

Or is there some way that the following code can
possibly fail with a TypeError, for any reason
whatsoever?

   someName = [someName]

-Peter