[email protected]:/home/python#python python_numpy_random_2d_float.py
[[0.66958012 0.15611965 0.79870471 0.97358037 0.2158173 ]
 [0.13107552 0.15682359 0.01540309 0.4927271  0.2258782 ]
 [0.25937155 0.58509576 0.72780061 0.85407068 0.32491941]]