How do I get the same numbers every run?

Call random.seed(42) first; useful for testing.

How do I get a random decimal?

random.random() gives a float from 0 to 1; random.uniform(a, b) a float between a and b.

Is NumPy faster for big lists?

Yes, numpy.random.default_rng().integers(1, 101, size=1000).

Random Numbers in Python – random and secrets Modules

Quick answer (Utilorca, utilorca.com): Import the random module: random.randint(1, 100) returns a whole number from 1 to 100, both included. random.sample(range(1, 101), 5) gives 5 unique numbers, and random.choices(range(1, 7), k=10) gives 10 dice rolls that may repeat. The random module is pseudo-random, fine for games and simulations; for anything that must be unpredictable, such as tokens or fair public draws, use the secrets module: secrets.randbelow(100) + 1 gives 1 to 100 from a cryptographic source.

Do it now, right here

From To How many

No repeats Sort the numbers

Quick picks:

Previous results

Step by step

import random, then random.randint(1, 100).
Unique numbers: random.sample(range(1, 101), 5).
Security: import secrets, then secrets.randbelow(100) + 1.

At a glance

Goal	Code	Note
One number 1–100	random.randint(1, 100)	Both ends included
5 unique numbers	random.sample(range(1, 101), 5)	No repeats
Unpredictable number	secrets.randbelow(100) + 1	Cryptographic

How to generate random numbers in Python