typedi 0.1

Python typed object schema validation

typedi

Simple typed dependency injection container.

To install from python package index simply type (no dependencies):

pip install typedi

Or, if you don't want to bring a dependency inside a project simply copy and paste typedi.py inside your project

Usage

Containers

typedi comes with a default shared container, to add or retrieve instances from it import it anywhere you need - usually in some initialization/bootstrapping logic.

from typedi import container

Or you could also create your own DI containers:

from typedi import Container

my_container = Container()

Instance bindings, "user-managed singletons"

from typedi import container

class MyClass:
    pass

instance = MyClass()
container.bind_to_instance(MyClass, instance)

# anywhere else
from typedi import container

instance = container.get_instance(MyClass)

Class bindings

from typedi import container

class MyClass:
    pass

instance = MyClass()
container.register_class(MyClass)

# anywhere else
from typedi import container

auto_instantiated_instance = container.get_instance(MyClass)

Class bindings with inheritance

from typedi import container

class MyClass:
    pass

class ChildOfMyClass(MyClass):
    pass

instance = MyClass()
container.bind_to_class(MyClass, ChildOfMyClass)

# anywhere else
from typedi import container

auto_instantiated_instance = container.get_instance(MyClass)  # type: ChildOfMyClass