[Tutor] Python as Teaching Language

[Russel Winder]

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.
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