Random Number Generator

Random Number Generator

Overview

Generate random values by running the bundled Python script from this skill. The script uses only Python's standard random and secrets modules and prints JSON by default so results are easy to parse.

Execution Rule

Run commands from this skill directory, so scripts/random_number.py resolves relative to this SKILL.md. If the shell is not already in the skill directory, change into the directory containing this file first.

Prefer Python launchers in this order:

1. python3
2. py -3 on Windows
3. python only after confirming it is Python 3

If Python 3 is unavailable, tell the user that this skill requires Python 3 and do not fake a random result.

Quick Start

python3 scripts/random_number.py random-int --low 1 --high 100

On Windows PowerShell:

py -3 scripts/random_number.py random-int --low 1 --high 100

To generate a batch of random numbers, pass the --size flag:

python3 scripts/random_number.py random-int --low 1 --high 100 --size 5

Commands

Random integer (single or batch):

python3 scripts/random_number.py random-int --low 1 --high 6 --size 5

Random float (single or batch):

python3 scripts/random_number.py random-float --low 0 --high 1 --size 5

Choices with replacement:

python3 scripts/random_number.py random-choices --population-json '["red","blue","green"]' --k 2

Weighted choices with replacement:

python3 scripts/random_number.py random-choices --population-json '["red","blue","green"]' --weights-json '[5,2,1]' --k 3

Shuffle a list:

python3 scripts/random_number.py random-shuffle --items-json '[1,2,3,4,5]'

Sample without replacement:

python3 scripts/random_number.py random-sample --population-json '["a","b","c","d"]' --k 2

Secure hex token(s):

python3 scripts/random_number.py secure-token-hex --nbytes 16 --size 3

Secure integer(s) from 0 up to but not including upper-bound:

python3 scripts/random_number.py secure-random-int --upper-bound 1000 --size 5

Choosing Secure vs Standard Randomness

Use secure-token-hex or secure-random-int for new random password candidates, tokens, invite codes, or any user request that mentions secure, cryptographic, crypto-safe, token, random password, password entropy, or password.

Do not use this skill to accept, store, transform, validate, or repeat existing passwords, API keys, bearer tokens, cookies, or credentials. Only generate new random values on direct user request.

Use the standard random commands for dice, games, simulations, sampling, shuffling, randomized examples, and everyday random selection.

JSON Input

Pass lists through JSON flags such as --population-json, --items-json, and --weights-json. In Bash, zsh, and PowerShell, wrap JSON in single quotes as shown above. For shells that do not support single quotes, escape the double quotes or use a shell that does.

Output

Default output is JSON. Examples:

[42]
[14, 82, 33, 91, 5]
["red", "green"]
["<secure-hex-output>"]

Available Script

• scripts/random_number.py - Command-line wrapper around Python random and secrets standard-library functions. Run python3 scripts/random_number.py --help for the full interface.