y = [[0,0,0],
[0,0,0]]
p = [1,2,3,4,5,6]
y[0] = p[0,2]
y[1] = p[3,4]
Returns error
I want to assign values in p to y, how to do that?
The answer should be y = [[1,2,3],[4,5,6]]
Thank you very much!
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2First of all, it would be nice to know the language you are working in.crush– crush2013-09-13 02:22:45 +00:00Commented Sep 13, 2013 at 2:22
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Python, I want to slice p and put each in ywesley– wesley2013-09-13 02:25:03 +00:00Commented Sep 13, 2013 at 2:25
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3 Answers
Your array slicing is using the wrong syntax. It should be:
y[0] = p[0:3]
y[1] = p[3:6]
- Use
:to slice arrays. Using,goes between dimensions, andpis not a 2-dimensional array! - End slices include the start, exclude the end. So
0:2has only elements0and1.
Comments
In Python, colon (:) is used to slice arrays: I think this is what you are looking for:
y = [[0,0,0], [0,0,0]]
p = [1,2,3,4,5,6]
y[0] = p[0:3]
y[1] = p[3:6]
Comments
y = []
p = [1,2,3,4,5,6]
y.append(p[:3])
y.append(p[3:])
print y
--output:--
[[1, 2, 3], [4, 5, 6]]
If you don't specify a value in the first position of a slice, python uses 0, and if you don't specify a value in the second position of a slice, python grabs the remainder of the list.
