pytest
A Python testing framework for writing simple tests that can also handle complex ones.
- Stars
- 14.7k
- Forks
- 3.6k
- Licence
- MIT
- Language
- Python
- Last update
- 4 days ago
- Type
- Library
What it is
pytest is a testing framework for the Python programming language. It lets you write tests as plain Python functions with simple assert statements, and it runs them and reports the results. According to its description, it is designed to stay easy for small tests while also supporting complex functional testing.
- Write unit tests for individual Python functions and classes
- Run a full test suite from the command line and see which tests fail
- Organize complex functional tests for a Python application
Great for
- Python developers who want to add automated tests to a project
- Beginners learning how to test code, since tests can be written as simple functions
- Teams maintaining larger Python codebases that need more advanced test organization
Not ideal for
- People who do not write Python, since the framework is specific to that language
- Projects that need tests in another language, such as JavaScript or Java, where a different tool fits better
How to get it
- 1
Install with a package manager
You'll need: Python 3
Install the latest release from PyPI
pip install -U pytest - 2
Run it
- Install pytest with pip
- Create a file named test_example.py containing a function whose name starts with test_ and uses assert
- Run pytest from the command line in the same folder
- Read the pass or fail summary that pytest prints
- 3
Get the most out of it
- Use the official documentation at https://pytest.org for guides and reference
- Organize tests into files whose names start with test_ so pytest discovers them automatically
- Check the project's GitHub page for the full README and plugin information
Downloads
Strengths
- Simple test syntax: plain functions and assert statements
- Scales from small scripts to complex test suites, per its description
- Open source under the MIT license with a large community (about 14,600 stars)
Trade-offs
- Only supports Python, so it does not help with other languages
- The README provided was truncated, so details on advanced features could not be verified here
How it compares
| Project | Stars | Type | Level | Updated | Best for |
|---|---|---|---|---|---|
| pytest (this) | 14.7k | Library | beginner | 4 days ago | Python developers who want to add automated tests to a project |
| mocha | 22.9k | Library | intermediate | 5 days ago | JavaScript and Node.js developers who want automated tests for their code |
| enzyme | 19.8k | Library | intermediate | 1.0 years ago | Developers maintaining React codebases that already have component tests |
| chromedp | 13.3k | Library | intermediate | 4 days ago | Go developers who want to automate or test web pages in code |
| javascript-testing-best-practices | 24.6k | Learning resource | beginner | 2.4 years ago | Developers who already write some JavaScript tests and want to improve their structure |
| jest | 45.5k | Library | beginner | 4 days ago | JavaScript or TypeScript developers who want a testing setup that works with little configuration |
Stats synced from GitHub. The assessment above was drafted with AI from the project's README on 2026-10-29 and may miss recent changes — check the README before relying on a command. MIT licence: free to use, modify and distribute, including commercially, as long as you keep the copyright notice.