Python, How to fill up a column in an empty numpy array

Question

I would normally go to

http://docs.scipy.org

for this info but their website is down for some reason:/

But how would I be able to fill up an entire column in a numpy matrix?

a = numpy.zeros(shape=(100,10))
a[0] = [1,2,3,4,5,6,7,8,9,0]

fills up a row, but how can you do a column?

`a[:, k] = values`. You would have found that in any NumPy tutorial. — Fred Foo, May 22 '14 at 18:23
@SaulloCastro You may post it if you want, I'm not interested in this basic stuff. — Fred Foo, May 29 '14 at 09:20
possible duplicate of [Replacing numpy array values python](http://stackoverflow.com/questions/11352778/replacing-numpy-array-values-python) — Saullo G. P. Castro, May 29 '14 at 11:57

score 5 · Answer 1 · answered Mar 13 '19 at 16:10

5

Never too late to answer...

a[:, k] = values

answered Mar 13 '19 at 16:10

dwp4ge

score 1 · Answer 2 · edited Jan 08 '21 at 05:32

1

This fills the same value in all columns:

  array[:, column] = values

edited Jan 08 '21 at 05:32

answered Jan 07 '21 at 05:20

Saim Yousuf

The question was how to fill up an entire column, not how to fill all columns with the same value. – Danny_DD Jan 07 '21 at 07:36

2 Answers2