

'''
numpy.unique
Find the unique elements of an array.

>>> np.unique([1, 1, 2, 2, 3, 3])
array([1, 2, 3])
>>> a = np.array([[1, 1], [2, 3]])
>>> np.unique(a)
array([1, 2, 3])
'''
def unique(ar, return_index=False, return_inverse=False):
    pass
	
