Python Dependency Injection Framework

Question

Is there a framework equivalent to Guice (http://code.google.com/p/google-guice) for Python?

Answer 1

Will leave my 5 cents here :)

https://pypi.python.org/pypi/dependency_injector

"""Pythonic way for Dependency Injection."""

from dependency_injector import providers
from dependency_injector import injections


@providers.DelegatedCallable
def get_user_info(user_id):
    """Return user info."""
    raise NotImplementedError()


@providers.Factory
@injections.inject(get_user_info=get_user_info)
class AuthComponent(object):
    """Some authentication component."""

    def __init__(self, get_user_info):
        """Initializer."""
        self.get_user_info = get_user_info

    def authenticate_user(self, token):
        """Authenticate user by token."""
        user_info = self.get_user_info(user_id=token + '1')
        return user_info


print AuthComponent
print get_user_info


@providers.override(get_user_info)
@providers.DelegatedCallable
def get_user_info(user_id):
    """Return user info."""
    return {'user_id': user_id}


print AuthComponent().authenticate_user(token='abc')
# {'user_id': 'abc1'}

UPDATED

Some time passed and Dependency Injector is a bit different now. It's better to start from Dependency Injector GitHub page for getting actual examples - https://github.com/ets-labs/python-dependency-injector