This is a pre-production deployment of Warehouse. Changes made here affect the production instance of PyPI (pypi.python.org).
Help us improve Python packaging - Donate today!

A simple dependency injection library

Project Description

A simple dependency injection library.

Usage example

First decorate a class with @provides('a lookup name').

>>> import syringe
>>>
>>> @syringe.provides('cure')
... class Syrup:
...     def drink(self, person):
...         print('Nom nom')
...         person.health = 100
...

Instantiate it. Note that it is not possible to instanciate another instance of a class decorated with the name cure.

>>> syrup = Syrup()

Next inject it in another class using inject('a lookup name').

>>> class Person:
...     cure = syringe.inject('cure')
...
...     def drink_medicine(self):
...         self.cure.drink(self)
...

When an instance of the Person class is created, the value of the injecte name is the instance of the provided and instantiated class.

>>> person = Person()
>>> person.health = 20
>>> assert person.cure == syrup
>>> person.drink_medicine()
Nom nom
>>> assert person.health == 100

Mocking

A mock instance can be inserted using syringe.mock('a lookup name')

>>> try:
...     from unittest import mock
... except:
...     import mock
...
>>> m = syringe.mock('cure')
>>> person.drink_medicine()
>>> m.drink.assert_called_once_with(person)

Installing

The package can be installed from the cheese shop by typing:

pip install syringe
Release History

Release History

This version
History Node

0.3.0

History Node

0.2.2

History Node

0.2.1

History Node

0.2.0

History Node

0.1.1

History Node

0.1.0

History Node

0.0.1

Download Files

Download Files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
syringe-0.3.0-py2.py3-none-any.whl (4.9 kB) Copy SHA256 Checksum SHA256 3.4 Wheel Jan 16, 2015
syringe-0.3.0.tar.gz (2.8 kB) Copy SHA256 Checksum SHA256 Source Nov 8, 2014

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting