[NumPy] Frequency Counts Unique Integer Values

import numpy as np

x = np.array([1,1,1,2,2,2,5,25,1,1])
unique, counts = np.unique(x, return_counts=True)

print(np.asarray((unique, counts)).T)

아웃풋:

[[ 1 5] [ 2 3] [ 5 1] [25 1]]