Oscar Benjamin wrote:
On Nov 7, 2012 5:41 AM, "Gregory Ewing" <greg.ew...@canterbury.ac.nz
<mailto:greg.ew...@canterbury.ac.nz>> wrote:
>
> If anything is to be done in this area, it would be better
> as an extension of list comprehensions, e.g.
>
> [[None times 5] times 10]
>
> which would be equivalent to
>
> [[None for _i in xrange(5)] for _j in xrange(10)]
I think you're right that the meaning of list-int multiplication
can't/shouldn't be changed if this way.
A multidimensional list comprehension would be useful even for people
who are using numpy as it's common to use a list comprehension to
initialise a numpy array.
A more modest addition for the limited case described in this thread
could be to use exponentiation:
>>> [0] ** (2, 3)
[[0, 0, 0], [0, 0, 0]]
What would happen with
--> [{}] ** (2, 3)
or
--> [my_custom_container()] ** (2, 3)
?
~Ethan~
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