FAQ
After at least 3 false starts on my programming introduction's chapter 3, and
some good and bad feedback from this group[1], I finally think the present
chapter 3 approach is Good (enough).

So no, I haven't given up in this book project, even though 4 months to produce
these chapter 3's first 30 pages or so might seem excessive!

This is a PDF document [03 - asd.pdf] at Google Docs, available via

<url: http://tinyurl.com/programmingbookP3>

I've tried to take earlier feedback to heart. E.g. verbosity: earlier attempt's
1+ page intro reduced to 1 line. And example selection: no scary math here.


Contents so far:

<contents>
3 [chapter title, undecided].
3.1 Error handling.
3.1.1 Error, failure, success (terminology).
3.1.2 The concept of exceptions.
3.1.3 Routine call hierarchies, call stack unwinding and stack traces.
3.1.4 Raising an exception / exception types / exception objects.
3.1.5 Handling an exception by using a try statement.
3.1.6 Interlude I: numerical input in a console program.
3.1.7 Exception translation and chained exceptions.
3.2 Cleanup handling.
3.2.1 Why automatic cleanup via object destruction (RAII) is ungood in Python.
3.2.2 Performing cleanup by using a finally clause (low level technique).
3.2.3 Performing cleanup by using a with statement.
</contents>


Comments welcome!


Cheers,

- Alf

Notes:
[1] I'm posting this only to [comp.lang.python], for now seeking feedback mainly
on the language aspects and general approach. Partially that's because,
empirically, there is some risk of a flame war erupting in this group, and I
don't want that spilling over into some other group. If/when the chapter's draft
is complete I'll cross-post a request for feedback to [comp.programming], or
perhaps post only to that group for the more pedagogical aspects.

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