I'm sorry to muddy the waters, but perhaps a solution is to try and stay
as close to regular Python syntax as possible. I am thinking of a nested
comprehension as a regular nested for-loop that has an expression rather
than a suite as its body:
Nested (List):
[for x in (0,10,20,30):
for y in (0,1,2,3):
x+y]
[0,11,22,33]
Parallel (Tuple):
(for x in (0,10,20,30) and y in (0,1,2,3):
x+y)
(0,11,22,33)
Parallel (Dict):
{for x in (0,10,20,30) and y in range (0,1,2,3):
x,y}
The dict one needs a little explaining. A dict comprehension is a
comprehension where the delimiters are curly braces and the generated
items are required to be pairs.
--
Paul Prescod - Not encumbered by corporate consensus
Simplicity does not precede complexity, but follows it.
- http://www.cs.yale.edu/~perlis-alan/quotes.html
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