Entropy Harvester

entropic.py

import entropy # pip install entropy
from collections import namedtuple

MIN_ENTROPY = 0.5
MIN_LENGTH = 140

S = namedtuple('S', 'text entropy')

def read_entropic(prompt='', min_entropy=MIN_ENTROPY, min_length=MIN_LENGTH):
    s = ''
    ent = 0
    length = 0
    while ent <= min_entropy and length < min_length:
        if s:
            s += '\n'
        s += input(prompt)
        length = len(s)
        ent = entropy.shannon_entropy(s)

    return S(s, ent)


if __name__ == '__main__':
    print('Smash the keyboard. Hit [ENTER].')
    print('Repeat until we harvest enough entropy:')
    print(read_entropic())