Tests and Documentation Done by Example.
eXamples (AKA: xamples for SEO) is a Python3 library enabling interactable, self-documenting, and self-verifying examples. These examples are attached directly to Python functions using decorators or via separate
MODULE_examples.py source files.
- Simple and Obvious API: Add
@examples.example(*args, **kwargs)decorators for each example you want to add to a function.
- Auto Documenting: Examples, by default, get added to your functions docstring viewable both in interactive interpreters and when using portray or pdocs.
- Signature Validating: All examples can easily be checked to ensure they match the function signature (and type annotations!) with a single call (
- Act as Tests: Examples act as additional test cases, that can easily be verified using a single test case in your favorite test runner: (
- Async Compatibility: Examples can be attached and tested as easily against async functions as non-async ones.
- Class Support: Currently examples can only be attached to individual functions. Class and method support is planned for a future release.
The following guides should get you up and running using eXamples in no time.
Installation - TL;DR: Run
pip3 install exampleswithin your projects virtual environment.
Adding Examples - TL;DR: Add example decorators that represent each of your examples:
# my_module_with_examples.py from examples import example @example(1, number_2=1, _example_returns=2) def add(number_1: int, number_2: int) -> int: return number_1 + number_2
Verify and Test Examples - TL;DR: run
examples.verify_and_test_exampleswithin your projects test cases.
# test_my_module_with_examples.py from examples import verify_and_test_examples import my_module_with_examples def test_examples_verifying_signature(): verify_and_test_examples(my_module_with_examples)
Introspect Examples -
import examples from my_module_with_examples import add examples.get_examples(add).use() == 2
Why Create Examples?
I've always wanted a way to attach examples to functions in a way that would be re-useable for documentation, testing, and API proposes. Just like moving Python parameter types from comments into type annotations has made them more broadly useful, I hope examples can do the same for example calls.
I hope you too find
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