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Pythonic dependency injection container

Project description

# pySyringe

[![Build Status](https://travis-ci.org/MichalPodeszwa/pySyringe.svg)](https://travis-ci.org/MichalPodeszwa/pySyringe)
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This is `pySyringe`. Inversion of Control container, which helps you get proper [`Dependency Injection`](https://en.wikipedia.org/wiki/Dependency_injection), while still being Pythonic.

Currently `pySyringe` works only on Python 3.3+. Maybe later, support for older versions will be added.

## Installation

pip install pysyringe

## Usage

```python
>>> import pysyringe
>>>
>>> class Foo:
...
... def __init__(self):
... self.bar = 42
...
>>> @pysyringe.inject(foo=Foo)
... def important_function(foo):
... return foo.bar
...
>>> important_function()
42

>>> class Mock:
... def __init__(self):
... self.bar = 1
...
>>> important_function(Mock())
>>>
>>> @pysyringe.inject_value(foo=42)
... def important_function2(foo):
... return foo
>>> important_function2()
42

```

As you can see testing is **a lot** simpler now. You don't need as much _(hopefully none)_ mocking as you used to.

If `pySyringe` injects the same class twice, it doesn't create instances twice, it simply returns previous one.

## Testing

1. Clone this repository
2. Run `python setup.py develop`
3. Install `pytest` from `pip`
4. Run `py.test`

Project details


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