Calculate the entropy of a bytes array.

bytes_entropy.py

import numpy as np
from scipy.stats import entropy
def bytes_entropy(target_bytes,base=None):
    v,c = np.unique([int(i) for i in target_bytes],return_counts=True)
    if base is None:
        base = len(target_bytes)
        if base >256:
            base = 256
    return entropy(c,base=base)