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Set routines — NumPy v2.5 Manual

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Set routines#

Making proper sets#

`unique`(ar[,return_index,return_inverse,...])	Find the unique elements of an array.
`unique_all`(x)	Find the unique elements of an array, and counts, inverse, and indices.
`unique_counts`(x)	Find the unique elements and counts of an input array x.
`unique_inverse`(x)	Find the unique elements of x and indices to reconstruct x.
`unique_values`(x)	Returns the unique elements of an input array x.

Boolean operations#

`intersect1d`(ar1,ar2[,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.
`union1d`(ar1,ar2)	Find the union of two arrays.

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