list comprehension question

[Terry Reedy]

On 10/16/2012 9:54 PM, Kevin Anthony wrote:
> I've been teaching myself list comprehension, and i've run across
> something i'm not able to convert.

list comprehensions specifically abbreviate the code that they are 
(essentially) equivalent to.

res = []
for item in source:
   res.append(f(item))
res

<==>

[f(item) for item in source]

Matrix multiplication does not fit the pattern above. The reduction is 
number addition rather than list appending.

-- 
Terry Jan Reedy