What's the simplest way to extend a numpy array in 2 dimensions?

Question

I have a 2d array that looks like this:

XX
xx

What\'s the most efficient way to add an extra row and column:

xxy
xxy
yyy
         


        

Answer 1

maybe you need this.

>>> x = np.array([11,22])
>>> y = np.array([18,7,6])
>>> z = np.array([1,3,5])
>>> np.concatenate((x,y,z))
array([11, 22, 18,  7,  6,  1,  3,  5])