Python; Append vector to an array

Question

I've got

Xa = [a1,a2,a3]
Xb = [b1,b2,b3]
Xc = [c1,b2,b3]

And I want

X = [[a1,a2,a3],[b1,b2,b3],[c1,b2,b3]]

Im using numpy append, concatenate, hstack, vstack, and others functions, but them doesnt work or gives me this

X = [a1,a2,a3,b1,b2,b3,c1,b2,b3]

Also after this process I will need to append Xd, Xe, Xf and so on, so I need a way to add these vectors to the array as they come.

Any ideas on what Im doing wrong or what to do?

Answer 1

It's pretty simple if just simple array. initialize an empty array and keep appending your arrays to it.

Xa = ['a1','a2','a3']
Xb = ['b1','b2','b3']
Xc = ['c1','b2','b3']

Empty array

resultArray = []
resultArray.append(Xa)
resultArray.append(Xb)
resultArray.append(Xc)

output:

[['a1','a2','a3'], ['b1','b2','b3'], ['c1','b2','b3']]

Hope this helps

Cheers