cfractions is a drop-in replacement for fractions module written using Python C API.

Main features are:

• speed & memory efficiency compared to pure-Python counterpart,
• full spectre of arithmetic & comparison operations,
• Python3.9+ support,
• PyPy support (by falling back to fractions.Fraction proxy).

In what follows python is an alias for python3.9 or pypy3.9 or any later version (python3.10, pypy3.10 and so on).

Install the latest pip & setuptools packages versions

python -m pip install --upgrade pip setuptools

Download and install the latest stable version from PyPI repository

python -m pip install --upgrade cfractions

Download the latest version from GitHub repository

git clone https://github.com/lycantropos/cfractions.git
cd cfractions

Install

python -m pip install -e .

>>> from cfractions import Fraction
>>> Fraction()
Fraction(0, 1)
>>> Fraction(1, 2)
Fraction(1, 2)
>>> Fraction(50, 100)
Fraction(1, 2)
>>> Fraction(0.5)
Fraction(1, 2)
>>> Fraction(1, 3) + Fraction(1, 6)
Fraction(1, 2)
>>> Fraction(3, 2) - 1
Fraction(1, 2)
>>> 1 - Fraction(1, 2)
Fraction(1, 2)
>>> Fraction(1, 3) * Fraction(3, 2)
Fraction(1, 2)
>>> Fraction(1, 3) / Fraction(2, 3)
Fraction(1, 2)
>>> Fraction(1, 6) * 3
Fraction(1, 2)
>>> Fraction(3, 2) / 3
Fraction(1, 2)
>>> str(Fraction(1, 2))
'1/2'

Install bump2version.

Choose which version number category to bump following semver specification.

Test bumping version

bump2version --dry-run --verbose $CATEGORY

where $CATEGORY is the target version number category name, possible values are patch/minor/major.

Bump version

bump2version --verbose $CATEGORY

This will set version to major.minor.patch-alpha.

Test bumping version

bump2version --dry-run --verbose release

Bump version

bump2version --verbose release

This will set version to major.minor.patch.

Install with dependencies

python -m pip install -e .[tests]

Plain

pytest

Inside Docker container:

• with CPython

  docker-compose --file docker-compose.cpython.yml up

• with PyPy

  docker-compose --file docker-compose.pypy.yml up

Bash script:

• with CPython

  ./run-tests.sh

  or

  ./run-tests.sh cpython

• with PyPy

  ./run-tests.sh pypy

PowerShell script:

• with CPython

  .\run-tests.ps1

  or

  .\run-tests.ps1 cpython

• with PyPy

  .\run-tests.ps1 pypy