How to change a specific numpy array inside a arrays of arrays?

Question

I'm writing a program but I'm finding dificulties to update a numpy array. The code:

print("p: " + str(pontoP))
print("d: " + str(deslocamento))
novoP = np.array([0,0,0])
novoP =  pontoP + deslocamento
pontos[i] = novoP
print("p+d: " + str(pontos[i]))

The output:

p: [0.         1.         0.33333333]
d: [ 0. -1.  0.]
p+d: [0 0 0]

pontoP , novoP and deslocamento are 1D numpy arrays (length 3), and pontos is a 2D numpy array (size 8 x 3).

The line novoP = pontoP + deslocamento is working: the arrays are being summed element-wise. However, pontos[i] = novoP is failing to update the 2D array pontos . What can I do? The desired result is to replace the ith array of pontos with the contents of novoP .

Answer 1

Thanks to @hpauli, I found that the issue was the type of numpy array. It was an int and when I tried to put a float in it, the float was being rounded.