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September 26, 2019 13:05
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Random choice based on probability distribution.
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| import random | |
| def weighted_choice(choices): | |
| total = sum(w for c, w in choices) | |
| r = random.uniform(0, total) | |
| upto = 0 | |
| for c, w in choices: | |
| if upto + w >= r: | |
| break | |
| upto += w | |
| if c == None: | |
| weighted_choice(choices) | |
| else: | |
| return c | |
| print(weighted_choice([('Mcdonalds',100.0),('Max\'s Restaurant',40.0),('Jollibee',3.0)])) |
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