unique(ar[, return_index, return_inverse, ...]) | Find the unique elements of an array. |
in1d(ar1, ar2[, assume_unique, invert]) | Test whether each element of a 1-D array is also present in a second array. |
intersect1d(ar1, ar2[, assume_unique]) | Find the intersection of two arrays. |
isin(element, test_elements[, ...]) | Calculateselement in test_elements, broadcasting overelement 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. |
union1d(ar1, ar2) | Find the union of two arrays. |