Paul Rudin wrote:
Sebastian <sebastian.lan...@gmx.de> writes:
Hi there,
I have an array x=[1,2,3]
In python such an object is called a "list".
(In cpython it's implemented as an automatically resizable array.)
Is there an operator which I can use to get the result
[1,1,1,2,2,2,3,3,3] ?
There's no operator that will give you that directly - but there are
plenty of one-liners that will yield that list.
e.g:
list(itertools.chain(*([x]*3 for x in [1,2,3])))
[1, 1, 1, 2, 2, 2, 3, 3, 3]
List comprehension also works nicely for this problem, and may be
clearer to some.
>>> x = [1,2,3]
>>> print [i for i in x for k in range(3)]
[1, 1, 1, 2, 2, 2, 3, 3, 3]
Gary Herron
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