[Tutor] Use of List Comprehension?

Alan Gauld alan.gauld at blueyonder.co.uk
Thu Jul 29 22:53:30 CEST 2004

> I was wondering under which circumstances one might use list
> comprehension.

You use it to build lists.

> Does it have any effect on computation time,

It usually performs faster than writing the equivalent Python code
because the comprehensions are implemented in C.

> used for a matter of simplicity (though could be less easier to

Some people seem to find comprehensions quite straightforward,
personally I still prefer the older map/filter/reduce functions
for readability, but that's because I'm used to their names in math.
I'm slowly getting used to reading comprehensions but I still don't
like the typical

[x for x ....]

syntax, I'd have liked to see some kind of separator,
like say a colon:

[x: for x...]

My opinion FWIW,

Alan G.

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