I've been studying python now for a few weeks and I've recently come into list comprehensions. Some of the examples that I've found make sense, and I find them readable and concise. In particular I'm referring to the python docs on the topic (http://docs.python.org/tutorial/datastructures.html#list-comprehensions). Those make sense to me. The way I understand them is:
do something to x for each x in list, with an optional qualifier. On the other hand I've seen a few examples that look similar, but there is no action done to the first x, which confuses me. An example: print sum(x for x in xrange(1,1000) if x%3==0 or x%5==0) In this case is sum() acting as the "action" on the first x? Can anyone shed some light on what it is I'm not quite grasping between the two? Christer _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
