list comprehension question

J Kenneth King james at
Wed May 6 09:48:51 EDT 2009

Emile van Sebille <emile at> writes:

> On 5/5/2009 9:15 AM J Kenneth King said...
>> List comprehensions can make a reader of your code apprehensive
>> because it can read like a run-on sentence and thus be difficult to
>> parse. The Python documentation discourages their use and I believe
>> for good reason.
> Can you provide a link for this?  I'd like to see specifically what's
> being discouraged, as I'd be surprised to find routine usage frowned
> upon.
> Emile

"If you’ve got the stomach for it, list comprehensions can be
nested. They are a powerful tool but – like all powerful tools – they
need to be used carefully, if at all."


"In real world, you should prefer builtin functions to complex flow

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