Set routines#

Hint

Making proper sets#

unique(ar[, return_index, return_inverse, ...])

Find the unique elements of an array.

`in1d`(ar1, ar2[, assume_unique, invert])	Tests whether each element of a 1-D array is also present in a second array.
`intersect1d`(arr1, arr2[, assume_unique, ...])	Find the intersection of two arrays.
`isin`(element, test_elements[, ...])	Calculates element in `test_elements`, broadcasting over `element` only.
`setdiff1d`(ar1, ar2[, assume_unique])	Find the set difference of two arrays.
`setxor1d`(ar1, ar2[, assume_unique])	Find the set exclusive-or of two arrays.