how to generate a box from xyz coordinates or distance and fill with points

how to generate a box from xyz coordinates or distance and fill with points

I have list of atoms with xyz coordinates . I calculated the minimum and
maximum distance from each point and got the dimensions. As example, x=
65.5, y= 70.8, z= 90. I want to generate a box of mentioned size and then
generate the points and its coordinates. I am new to python and slowly
learn this wonderful language. Thanks in advance.