---
id: surer
version: "0.0.3"
license: Apache License 2.0
license_treatment: permissive
maintenance: abandoned
---

# surer

License: permissive · Maintenance: abandoned · Downloads: 201.3K/mo

## What it is and what it does

Surer is a fork providing fluent, chainable assertion syntax for Python tests modeled after RSpec Expectations and should.js. Instead of traditional `assert` statements, you write readable expressions like `(4).should.equal(2 + 2)` or `{'foo': 'bar'}.should.have.key('foo').which.should.equal('bar')`. It supports assertions on numbers, strings, dictionaries, and collections with a natural, English-like flow.

The package is maintained primarily to support recent Python versions (3.6, 3.7, 3.8, 3.9, 3.10, 3.11) but is no longer actively developed. It has no runtime dependencies, making installation lightweight. The last commit was 2023-01-08, and the repository shows minimal activity, so while it works for its stated purpose, you should expect no new features or rapid bug fixes.

Use it for:

- Writing unit tests with more readable, fluent assertions instead of traditional assert statements.
- Testing dictionary structures and verifying nested keys and values with chainable syntax.
- Building test suites where assertion readability and developer experience are priorities.
- Migrating test code from RSpec or should.js-based projects to Python while preserving assertion style.
- Prototyping or maintaining legacy test code that already uses the 'sure' library.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Surer provides fluent, RSpec-inspired assertion syntax for Python testing, allowing readable chained assertions like `(4).should.equal(2 + 2)` and dictionary/string introspection.

Yes, if you prefer fluent assertion syntax and are comfortable with an abandoned but stable package. Surer has no dependencies, works on Python 3.6–3.11, and carries no known vulnerabilities. However, expect no active maintenance—use it only if you accept that bugs or incompatibilities with future Python versions will not be fixed by the maintainers. For new projects, consider actively maintained alternatives.

## Install

pip install surer
uv add surer
poetry add surer

## Installing surer

Before you install: Installation is frictionless with no runtime dependencies. However, the package is abandoned—last commit was 2023-01-08, with minimal community engagement (1 star). It receives maintenance only for Python version support, not active development.

License in practice: Licensed under Apache License 2.0 (permissive), so you can use, modify, and distribute it freely in commercial or private projects without restriction.

Quickstart:

pip install surer

import surer

(4).should.equal(2 + 2)
{'foo': 'bar'}.should.have.key('foo')

Requires Python >=3.6; no system dependencies.

Verify before relying:

- Whether the assertion API remains stable across all supported Python versions (3.6–3.11) in practice.
- Whether the fork diverges meaningfully from the original 'sure' library beyond Python version support.
- Active maintenance status and responsiveness to bug reports or pull requests.

## Package facts

- License: Apache License 2.0 (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: abandoned
- Downloads: 201.3K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

fluent assertion library, rspec-style testing python, readable test assertions, chained assertion syntax, python testing assertions, should-style assertions, expressive test matchers, fluent-assertions, test-framework, abandoned-but-stable

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