How to implement biased random function?

Question

My question is about random.choice function. As we know, when we run random.choice(['apple','banana']), it will return either 'apple' or 'banana' with equal probabilities, what if I want to return biased result, for example, rerurn 'apple' with 0.9 probability and 'banana' with 0.1 probability? How to implement this?

Answer 1

Luckily, in Python 3, you can simply use

import random
random.choices(a, probability)
#random.choices(population, weights=None, *, cum_weights=None, k=1)