Pycategories
Pycategories is a Python 3 library that implements ideas from category theory, such as monoids, functors, and monads. It provides a Haskell-influenced interface for defining instances of those typeclasses and defines several right out of the box, for example the Maybe monad:
>>> from categories import apply >>> from categories.maybe import Just, Nothing >>> f = Just(lambda x: x ** 2) >>> x = Just(17) >>> apply(f, x) Just(289) >>> apply(f, Nothing()) Nothing
Or to define your own instance of a typeclass:
>>> from categories import mappend, mempty, monoid
>>> monoid.instance(dict, lambda: {}, lambda a, b: dict(**a, **b))
>>> mappend({'foo': 'bar'}, {'rhu': 'barb'})
{'foo': 'bar', 'rhu': 'barb'}
Installation
pip install pycategories
To clone the repo and install dependencies for development:
git clone https://gitlab.com/danielhones/pycategories cd pycategories pip install -e .[dev]
Support and Contributing
License
Pycategories is licensed under the MIT License
Documentation
Documentation is available at pycategories.readthedocs.io
1 maintainer
Metadata
1 maintainer
Release files for pycategories 1.2.0
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| pycategories-1.2.0.tar.gz | 16.1 kB | Without provenance | Details for pycategories-1.2.0.tar.gz |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| pycategories-1.2.0-py3-none-any.whl | Python 3 | none | any | Details for pycategories-1.2.0-py3-none-any.whl |
Total release size: 29.3 kB
Release files / pycategories-1.2.0.tar.gz
| Download URL | pycategories-1.2.0.tar.gz |
|---|---|
| Size | 16.1 kB |
| Tags | Source |
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Release files / pycategories-1.2.0-py3-none-any.whl
| Download URL | pycategories-1.2.0-py3-none-any.whl |
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| Size | 13.2 kB |
| Tags | Python 3 |
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Security for pycategories 1.2.0
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