Computing the distance between each pair of points

[Truman]

It looks that this operation adds an axis to my array, turning it from 2D into 3D

X[:, np.newaxis, :]

Output:
array([[[0.37454012, 0.95071431]],

       [[0.73199394, 0.59865848]],

       [[0.15601864, 0.15599452]],

       [[0.05808361, 0.86617615]],

       [[0.60111501, 0.70807258]],

       [[0.02058449, 0.96990985]],

       [[0.83244264, 0.21233911]],

       [[0.18182497, 0.18340451]],

       [[0.30424224, 0.52475643]],

       [[0.43194502, 0.29122914]]])