Stephen J. Turnbull schrieb am 23.02.2018 um 03:31: > Barry Warsaw writes: > > rather than having to pause to reason about what that 1-element > > list-like syntax actually means, and 2) will this encourage even > > more complicated comprehensions that are less readable than just > > expanding the code into a for-loop? > > Of course it will encourage more complicated comprehensions, and we > know that complexity is less readable. On the other hand, a for loop > with a temporary variable will take up at least 3 statements vs. a > one-statement comprehension.
IMHO, any complex comprehension should be split across multiple lines, definitely if it uses multiple for-loops, as in the discussed example. So the "space win" of a complex comprehension that requires temporary values over a multi-line for-statement is actually not big in these cases. There are certainly cases where a comprehension still looks better, but I'm all for not encouraging a hacky idiom to stuff more into a comprehension. Comprehensions should be used to *improve* readabilty, not to reduce it. Stefan _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
