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Author mark.dickinson
Recipients docs@python, mark.dickinson, mattlong
Date 2011-12-08.13:16:52
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Isn't the documentation that you refer to about *nested* list comprehensions, rather than list comprehensions with multiple 'for' clauses?


    [number for row in matrix for number in row]

is not a nested list comprehension:  it's merely a list comprehension with two 'for' clauses.  But:

    [[number for number in row] for row in matrix]

*is* a nested list comprehension (a list comprehension for which the initial expression is itself a list comprehension), and there the advice to read from right to left seems to make sense to me.
Date User Action Args
2011-12-08 13:16:52mark.dickinsonsetrecipients: + mark.dickinson, docs@python, mattlong
2011-12-08 13:16:52mark.dickinsonsetmessageid: <>
2011-12-08 13:16:52mark.dickinsonlinkissue13549 messages
2011-12-08 13:16:52mark.dickinsoncreate