haps

Haps [χaps] is a simple DI library, with IoC container included. It is written in pure Python with no external dependencies.

Look how easy it is to use:

from haps import Container as IoC, Inject, inject

# import interfaces
from my_application.core import IDatabase, IUserService


class MyApp:
    db: IDatabase = Inject()  # dependency as a property

    @inject  # or passed to the constructor
    def __init__(self, user_service: IUserService) -> None:
        self.user_service = user_service

IoC.autodiscover('my_application')  # find all interfaces and implementations

if __name__ == '__main__':
    app = MyApp()
    assert isinstance(app.db, IDatabase)
    assert isinstance(app.user_service, IUserService)

Installation

pip install haps

Documentation

See https://haps.readthedocs.io/en/latest/

Usage examples

See https://github.com/lunarwings/haps/tree/master/samples

Testing

Install requirements.test.txt and run py.test in main directory.

Changelog

1.1.3 (2022-02-04)

• Add >> operator
• Add DI alias
• Update .travis.yml

1.1.1 (2018-07-27)

• Fix bug with optional arguments for functions decorated with @inject

1.1.0 (2018-07-26)

• Add configuration module
• Add application class and runner
• Add profiles
• Minor fixes

1.0.5 (2018-07-12)

• @egg decorator can be used without function invocation

1.0.4 (2018-06-30)

• Add support for python 3.7
• Fix autodiscover sample

1.0.0 (2018-06-15)

• First stable release