[Tutor] capturing error msg in exception

[Adam Bark]

On 28 June 2010 00:27, Steven D'Aprano <steve at pearwood.info> wrote:

> On Mon, 28 Jun 2010 03:12:39 am Adam Bark wrote:
>
> > I think the 'as' syntax is only available in Python 3.x
>
> You think wrong. It is available from Python 2.6 onwards.
>

I know, I corrected myself after Steve Willoughby pointed it out.


>
>
> > Question marks go at the end of the sentence where you would normally
> > put a full stop if it wasn't a question.
>
> That's a terribly unhelpful answer given the context of Payal's
> question. I'm sure he knows the grammatical rules for questions in
> ordinary English sentences, but he's asking specifically about a
> particular form of sentence where you have a question consisting of two
> or more alternatives or examples separated as paragraphs:
>
> Well it was a terribly unclear question, I just answered what I thought he
was asking.


> [example]
> Hello, which is better, a lambda:
>
> (1) lambda x: x+1
>
> or a function definition:
>
> (2) def f(x):
>        return x+1?
> [end example]
>
> It is very reasonable to ask where to put the question mark in examples
> like this. Unfortunately there is no good answer. If you put it on the
> same line as the second example, as shown, certainly isn't correct
> because it makes the question mark part of the example. It's
> *especially* dangerous in a programming context, because it leads to a
> syntax error.
>
> Putting it on a line on it's own after the example looks silly.
> Re-writing the question to avoid the problem is often awkward, but can
> be done:
>
> [rewritten example]
> Hello, which of these two are better?
>
> (1) lambda x: x+1
>
> (2) def f(x):
>        return x+1
> [end rewritten example]
>
> Since there is no One Right Answer, you can do whichever seems best in
> context.
>
I'm sure this "work it out yourself" answer is much more helpful.
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