all Python 3randomterm

random

module

Pseudo-random numbers: random integers and floats, picking from a list, shuffling, sampling without repeats.

Syntax

import random

random suits games, simulations and test data, but not passwords or tokens: its generator is predictable, and secrets exists for security. The same seed yields the same sequence, which helps reproducible experiments. Traps: randint(a, b) includes b, unlike randrange and range, and shuffle reorders the list in place and returns None.

Examples

import random
random.seed(42)
print(random.randint(1, 100), random.choice('abc'))  # → 82 a
cards = [1, 2, 3]
print(random.shuffle(cards))  # → None — перемешивает на месте
print(sorted(cards))  # → [1, 2, 3]

See also

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