orderings 1.4.0

Ordering enumeration and protocols.

orderings

Ordering enumeration and protocols.

Installing

Python 3.8 or above is required.

pip

Installing the library with pip is quite simple:

$ pip install orderings

Alternatively, the library can be installed from source:

$ git clone https://github.com/nekitdev/orderings.git
$ cd orderings
$ python -m pip install .

poetry

You can add orderings as a dependency with the following command:

$ poetry add orderings

Or by directly specifying it in the configuration like so:

[tool.poetry.dependencies]
orderings = "^1.4.0"

Alternatively, you can add it directly from the source:

[tool.poetry.dependencies.orderings]
git = "https://github.com/nekitdev/orderings.git"

Motivation

Sometimes it's simpler to handle ordering in one method, for example when comparing iterators; then it's trivial to implement the regular ordering methods using the compare method.

Examples

Core

The core of orderings is the Ordering enumeration and the Compare protocol:

from typing import Generic, TypeVar

from attrs import frozen
from orderings import Compare, Ordering, StrictOrdered
from typing_extensions import Self

T = TypeVar("T", bound=StrictOrdered)


@frozen()
class Wrap(Compare, Generic[T]):
    value: T

    def compare(self, other: Self) -> Ordering:
        self_value = self.value
        other_value = other.value

        if self_value < other_value:
            return Ordering.LESS

        if self_value > other_value:
            return Ordering.GREATER

        return Ordering.EQUAL

Compare implements all ordering operations (==, !=, <, >, <=, >=) using the compare method.

Documentation

You can find the documentation here.

Support

If you need support with the library, you can send an email or refer to the official Discord server.

Changelog

You can find the changelog here.

Security Policy

You can find the Security Policy of orderings here.

Contributing

If you are interested in contributing to orderings, make sure to take a look at the Contributing Guide, as well as the Code of Conduct.

License

orderings is licensed under the MIT License terms. See License for details.