[Python-Dev] List comprehensions

[Skip Montanaro]

>>>>> "Paul" == Paul Prescod <paul@prescod.net> writes:

    Paul> I want to summarize my feelings on the list-comp syntax
    Paul> issue. There is no syntax for list comprehensions that will
    Paul> inherently scream "cartesian product, not parallel". The only way
    Paul> to do it is by analogy to what they already know: Python.

    Paul> [for x: if y(x): for z: (x,y,z)]

Agreed, however, your use of colons connotes the following to me

    l = []
    for x in something:
	if y(x):
	    for z in something_else:
	        l.append((x,y,z))
    return l

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