Using namedtuples field names for column indices in a list of lists

Paul Rudin paul.nospam at rudin.co.uk
Sun Jan 8 09:48:41 EST 2017


"Deborah Swanson" <python at deborahswanson.net> writes:

> Peter Otten wrote, on January 08, 2017 3:01 AM
>> 
>> columnA = [record.A for record in records]
>
> This is very neat. Something like a list comprehension for named tuples?

Not something like - this *is* a list comprehension - it creates a list
of named tuples.

The thing you iterate over within the comprehension can be any
iterator. (Of course you're going to run into problems if you try to
construct a list from an infinite iterator.)


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