mutation

import numpy as np
 
pop_size = 5
length = 3
 
pop = np.zeros((pop_size, length))
 
def mutate(pop, prob=0.5):
    r = np.random.random((pop_size, length)) < prob
    v = np.random.random((pop_size, length)) - 0.5
    return pop + r * v
 
for _ in range(5):
    pop = mutate(pop)
    print(3 + _, pop)