[Edu-sig] PyWhip - Keep on crackin' it!!
macquigg at ece.arizona.edu
Mon Mar 9 00:44:03 CET 2009
At 08:41 AM 3/8/2009 -0700, kirby urner wrote:
>What I'm seeing at your site so far is a very low level workout in
>Python basics -- not a criticism in any way, just suggesting you could
>apply the same technique to more challenging problems.
>Here's one I like:
>Write a Python generator so you get successive rows of Pascals
>triangle, like this:
>o = Pascal() # o for object
>and so on (Pascal's triangle). Note I'm using Python 3.x syntax.
>One of the best solutions is:
> row = 
> while True:
> yield row
> row = [i + j for (i,j) in zip(+row, row+)]
Nice! If you don't mind, I'll use this in our category "math" at level-3. It is more challenging than the level-1 we are focused on now, but the more advanced problems will come soon.
The idea is to organize the problems in layers. Layer-1 is problems that don't depend on students knowing anything that isn't in a short help page on a specific topic, like strings. Layer-2 can depend on knowing all the basic techniques in layer-1. Thus, we can now ask string questions that are best solved with a loop. Layer-3 would include the more challenging problems, like the one you are suggesting.
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