deps

Python >=3.6 dependency injection based on attrs. Very simple, yet powerful.

Inspired by inject-attrs.

Usage

depsworks only with typing annotations defined as presented below!

1. First, replace your @attr.s(...) decorators:

   @attr.s(auto_attribs=True, <otherargs/kwargs...>)classThing:
   cfg: Configsome_dep: SomeClass

   With:

   importdeps
   @deps.s(<otherargs/kwargs...>)
   classThing:
   cfg: IConfigsome_dep: ISomeClass

   Notice that auto_attribs=True is no more needed, it will be forced by this package.

2. Next you have to prepare - somewhere in your codebase - an abstract interfaces classes for your attributes:

   importdepsclassIConfig(deps.Interface)
   # ...classISomeClass(deps.Interface)
   # ...

3. Now prepare interfaces implementations:

   frominterfacesimportIConfig, ISomeClassclassConfig(IConfig)
   # ...classSomeClass(ISomeClass)
   # ...

4. Finally, configure dependency injection bindings provided by Inject package, using bind_to_constructor directive.

License

MIT

Creator

Daniel Kuruc