Mock Data Python Packages

fabulist

Generate random strings that make sense.

fakedata-python

The fakedata package generates realistic synthetic user profiles for machine learning, deep learning, data analysis, and data science workflows.

seedfaker

Deterministic synthetic data generator for realistic, correlated, and noisy test records across 68 locales. Rust CLI/Python/Node.js/Browser WASM/Go/PHP/Ruby/MCP

card-generator

Python library to generate and validate credit card numbers. Features a fast, offline BIN lookup using a local database. Zero dependencies, no API keys needed. Perfect for generating test data.

mostlyai-mock

Synthetic Mock Data

misata

High-performance open-source synthetic data engine. Uses LLMs for schema design and vectorized NumPy for deterministic, scalable generation.

pyfake

A Flexible and Extensible fake data generator based on Pydantic models.

pydni

Spanish identity utilities: validation and generation of DNI, NIE, CIF, NIF, names, emails and birthdates.

lsstdesc-gcr-catalogs

Catalog repo for LSST DESC

cosmo-learn

Cosmological simulations and learning in one

lokii

Generate, Load, Develop and Test with consistent relational datasets!

leblanc

leblanc is a modular Python library designed for the rapid generation of large-scale synthetic datasets across various business sectors. It is primarily built using Pandas, NumPy, and Faker to create realistic, structured DataFrames suitable for Data Science training, testing, and exploratory data analysis (EDA).

pirated-data

This package will gives you random data of user. It can be used for mock data and used for sample data.

faker-geoscience

Fake data generators for everything Earth (and beyond!)