On 28/03/2014 21:56, Mark H Harris wrote:
On Fri, Mar 21, 2014 at 1:42 PM, vasudevram <vasudev...@gmail.com> wrote:
>> Can anyone - maybe one of the Python language core team, or someone
>> with knowledge of the internals of Python - can explain why this >>
code works, and whether the different occurrences of the name x in >>
the expression, are in different scopes or not? :
>>
>> x = [[1,2], [3,4], [5,6]]
>> [x for x in x for x in x]
> I'll give this +1 for playfulness, and -2 for lack of clarity.
> I hope no one thinks this sort of thing is good to do in real-life code.
Strange, I thought Dan Stromberg wrote the above.
No. This has to be a better way to flatten lists:
>>> from functools import reduce
>>> import operator as λ
>>> reduce(λ.add, l)
[1, 2, 3, 4, 5, 6, 7, 8, 9]
Why reinvent yet another way of flattening lists, particulary one that
doesn't use the far more sensible:-
from operator import add
As for the stupid symbol that you're using, real programmers don't give
a damn about such things, they prefer writing plain, simple, boring code
that is easy to read.
--
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
Mark Lawrence
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