def data:
 [[0.748501, 4.09624],
  [3.00302,  5.26164],
  [3.61878,  9.52232],
  [7.46911,  4.71611],
  [5.7819,   2.69367],
  [2.34709,  8.74782],
  [2.87169,  5.97774],
  [6.33101,  0.463131],
  [7.46489,  4.6268],
  [1.45428,  0.087596] ];

data | closest_pair