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Given an numpy array a, I can use np.unique(a) to generate the unique values included in a. How can I get the count of each unique values included in a?

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    If you want the count of each unique element, you can use from collections import Counter then print(Counter(a)) Commented May 13, 2018 at 2:12

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Since you mentioned np.unique, it accepts a second argument called return_counts:

u, c = np.unique(a, return_counts=True)

c[i] is the corresponding count for u[i].

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