On Sun, 2014-02-09 at 13:36 +0000, Oscar Benjamin wrote:
[…]
> I agree entirely, but what you've overlooked is that my examples are
> carefully targeted at a particular part of a tutorial-based class.
> We're talking about iteration so this is quite early in the course. At
> this stage I want my students to understand that closing a file is an
> explicit action that needs to occur. Later in the course I will teach
> exception handling and explain that the above should be rewritten as
>
> f = open('myfile.txt')
> try:
> for line in f:
> print(line.upper())
> finally:
> f.close()
>
> Shortly after that we will look at using (but not creating) context
> managers and I'll explain that file objects are also context managers.
Works for me. Personally I would ensure I put in forward signposts at
the time of covering earlier codes to ensure people realize there is a
progression and that the current code is initial not final.
--
Russel.
=============================================================================
Dr Russel Winder t: +44 20 7585 2200 voip: sip:russel.win...@ekiga.net
41 Buckmaster Road m: +44 7770 465 077 xmpp: rus...@winder.org.uk
London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder
_______________________________________________
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
https://mail.python.org/mailman/listinfo/tutor
