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How to create a global control holdout group in Python

This code implements a deterministic global control holdout group, randomly selecting a fraction of users to be excluded from feature rollouts for experiment validation.

ab-testing holdout global-control

Python

import random

class GlobalControl:
    def __init__(self, population_size, holdout_fraction=0.2, seed=42):
        random.seed(seed)
        self.population_size = population_size
        self.holdout_fraction = holdout_fraction
        self.holdout_size = int(population_size * holdout_fraction)
        self.holdout_…

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