Python script to calculate the distance between two polynomials given degree of power and coefficients

I have two arrays of 3-dimensional points, and I need a function that tells me the minimum distance between one array to the next. I've tried to use [login to view URL] to calculate the distance between one point on the curve against every point on the other curve and then take the minimum, but the run time is really long, and it's not very elegant. As a result, I tried to fit a n-degree polynomial to both arrays and transform them into a polynomial function. Attached polynomial fit and raw data column WB marks separate arrays. I'm hoping to get a function as such def spacing(WB1, WB2) return (Spacing) where WB1 is a n by 3 array and WB2 is z by 3 array, and spacing is a n by 1 array. if I were to say spacing (WB2, WB1) then I hope to get spacing as a m by 1 array.