NumPy Reference: 

• : Select array elements with another array

def indexing():    a = np.random.rand(5)    print(a)  #[ 0.71899463  0.50556877  0.8397599   0.37655158  0.88041567]    indices = np.array([1,1,2,3]) # access index of 1,1,2,3    print(a[indices])  #[ 0.50556877  0.50556877  0.8397599   0.37655158]if __name__ == "__main__":    indexing()