larzfaker

Deterministic fake data for tests, demos, and seeds. Pure Python, zero deps.

Names, emails, addresses, money, dates, lorem text, and whole records — generated from a seed, so the same seed always produces the same data. Reproducible fixtures, stable demo databases, and failing tests you can reproduce exactly.

from larzfaker import Faker

f = Faker(seed=42)
f.name()        # 'Grace Hopper'
f.email()       # 'grace.hopper@example.com'
f.money()       # '$4,215.60'
f.records(5, {"name": f.name, "email": f.email, "balance": f.money})

Why

• Deterministic by design. Seed it and the sequence is fixed — the whole point for test fixtures and demos, and unlike reaching for bare random.
• Money- and date-aware. money()/money_decimal() and ranged date()/datetime() — realistic seed data that pairs with larztable and larzledger.
• Records in one call. records(n, {field: callable}) builds lists of dicts — drop straight into a database or a table.
• Zero dependencies. No faker, no locale data packs.

Install

pip install larzfaker

Providers

name first_name last_name username email phone company job · address street city zipcode · word words sentence paragraph text slug · integer decimal boolean choice pick color uuid4 url · money money_decimal date datetime · record records.

Tests

python -m unittest discover -s tests -v   # 26 tests incl. determinism

The Larz stack

One of 30+ pure-Python, zero-dependency libraries at github.com/larz-scripter.

License

MIT © larz-scripter