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Project Description

Simple Dependency Injection Container inspired by Pimple.

Installation

Using pip:

# pip install rumple

Manually:

$ git clone https://github.com/Kilte/rumple
$ cd rumple
# python setup.py install

Usage

from rumple import Container

c1 = Container()
c2 = Container({
    'param': 'value',
    'service': lambda: object()
})

Defining services

from rumple import Container


class Service(object):
    pass


class AnotherService(object):
    def __init__(self, service):
        self.service = service

container = Container()
container['service'] = lambda: Service()
container['another_service'] = lambda c: AnotherService(c['service'])
another_service = container['another_service']
assert isinstance(another_service, AnotherService)
assert another_service.service is container['service']

Defining parameters

from rumple import Container

container = Container()
container['parameter'] = 'value'
assert container['parameter'] == 'value'

Extending services

from rumple import Container


class Service(object):
    def __init__(self):
        self.optional_dependency = None

    def set_optional_dependency(self, dependency):
        self.optional_dependency = dependency


class OptionalDependency(object):
    pass


def extend_service(service, container):  # Note: you can omit "container" argument
    service.set_optional_dependency(container['optional_dependency'])
    return service

container = Container()
container['service'] = lambda: Service()
container['optional_dependency'] = lambda: OptionalDependency()
container.extend('service', extend_service)

Providers

from rumple import Container, extend, share, value


class Provider(object):
    @share()
    def service(self):
        return object()

    @share('renamed_service')
    def another_service(self):
        return object()

    @share()
    def service_for_extend(self):
        return object()

    @value()
    def first_option(self):
        return 'value_1'

    @value('second_option_renamed')
    def second_option(self):
        return 'value_2'

    @value()
    def _ignored(self):
        return 'value'


class AnotherProvider(object):
    @extend('service_for_extend')
    def extend_service(self, service_for_extend):
        assert isinstance(service_for_extend, object)
        return str(object)


container = Container()
container.register(Provider())
container.register(AnotherProvider())
assert isinstance(container['service'], object)
assert isinstance(container['renamed_service'], object)
assert isinstance(container['service_for_extend'], str)
assert container['first_option'] == 'value_1'
assert container['second_option_renamed'] == 'value_2'
assert '_ignored' not in container

Iterating through a container

from rumple import Container

container = Container({'k1': 'v1', 'k2': 'v2'})
for item in container:
    print(item)

# Output:
# ('k1', 'v1')
# ('k2', 'v2')

Changelog

0.1.0 (15.07.2015)

  • First release

Contributing

  • Fork and clone it
  • Create your feature branch (git checkout -b awesome-feature)
  • Make your changes
  • Write/update tests, if it’s necessary
  • Update README.md, if it’s necessary
  • Push your branch (git push origin awesome-feature)
  • Send a pull request

LICENSE

The MIT License (MIT)

Release History

Release History

0.1.0

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
rumple-0.1.0.tar.gz (3.6 kB) Copy SHA256 Checksum SHA256 Source Jul 14, 2015

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