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        "author": "Franz Eichhorn",
        "author_email": "frairon@googlemail.com",
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        "description": ".. role:: bash(code)\n    :language: bash\n\nSimple Inversion-Of-Control-Container for python\n================================================\n\nThis package provides a simple inversion-of-control container.\n\nInstall with \n\n.. code:: bash\n\n    pip install pythonioc\n\nQuick Start\n-----------\n\nThe main idea is: services are registered to a service-registry and can be injected into users of that service (which can of course be services themselves).\n\nYou have two options: \n\n(A) use a global registry (never create a registry yourself)\n    \n(B) use a local registry\n    \nExamples are below, more details will follow.\n\nGlobal Registry\n^^^^^^^^^^^^^^^\n\n.. code:: python\n\n    import pythonioc\n\n    # register your service with a default name (here: 'someService', see Notes On Names)\n    @pythonioc.Service\n    class SomeService(object):\n    \n        # called when the service is auto-instantiated.\n        def postInit(self):\n            pass\n        \n    @pythonioc.NamedService('DifferentNameService')\n    class DifferentService(object):\n        pass        \n        \n    # for classes which we cannot decorate:\n    pythonioc.registerService(ExternalService)\n    \n    # when we don't even have the class (or don't care about lazy-initialization)\n    pythonioc.registerServiceInstance(SomeService())\n    \n    \n    class ServiceUser(object):\n        # inject the dependency by class\n        service = pythonioc.Inject(SomeService)\n        \n        # inject the dependency by name (for cyclic dependencies)\n        service2 = pythonioc.Inject('DifferentNameService')\n       \n      \n     myUser = ServiceUser()\n     \n     myUser.service # --> automatically created and injected service instance.\n     \n     # explicitly get a service\n     pythonioc.getService(SomeService)\n     pythonioc.getService('DifferentNameService')\n\n     \n\nLocal Registry\n^^^^^^^^^^^^^^\n\n.. code:: python\n\n\n    class Service(object):\n        \n        # this will make the service registry inject a service named \"someOtherService\" which \n        # comes from class SomeOtherService\n        _someOtherService = None\n        \n        def __init__(self):\n            pass\n            \n        # will be called after everything is injected\n        def postInit(self):\n            pass\n            \n        # will be called right before the object is destroyed (the registry's clean\n        # method is called)\n        def preDestroy(self):\n            pass\n            \n            \n\n    class SomeOtherService(object):\n        pass\n        \n    # let's register our services\n    reg = ServiceRegistry()\n    reg.registerService(Service)\n    reg.registerService(SomeOtherService)\n\nOnce everything is registered, a service can be injected by\n\n.. code:: python\n\n\n    class WiredUser(object):\n\n        _service=None\n        \n        def __init__(self, *args):\n            pass\n            \n    wiredUser = reg.createWired(WiredUser, 'arg1', 'arg2')\n\nWired objects are not automatically part of the service registry, only\nif added by calling ``reg.registerServiceInstance``. \n\nWired objects can inject their own service registry, so they can create wired objects on the fly:\n\n.. code:: python\n\n\n    class WiredUser(object):\n        _service=None\n        \n\n    class UserCreator(object):\n        _serviceRegistry=None\n        \n        def createUser(self):\n            return self._serviceRegistry.createWired(WiredUser) \n        \n    userCreator = reg.createWired(UserCreator)\n\n    # create some wired users\n    userA = userCreator.createUser()\n    userB = userCreator.createUser()\n\n\nNotes on Names\n--------------\n\nServices added to the registry need a name. If no name is provided, the class' name (or the instance's class name) is used. The name's first character is lowered by convention.\n\nExample:\n\n.. code:: python\n\n    import pythonioc\n    \n    class MyService(object):\n        pass\n    \n    pythonioc.registerService(MyService)            # --> name is 'myService'\n    pythonioc.registerServiceInstance(MyService())  # --> name is 'myService'\n    pythonioc.registerService(MyService, serviceName='customName') # --> name is 'customName'\n    pythonioc.registerServiceInstance(MyService(), serviceName='customName2')  # --> name is 'customName2'\n    \n\nNotes on Dependency Cycles\n--------------------------\n\nGenerally, dependency cycles are resolved by lazily initializing services. Critical cycles can still occur, when two services depend on each other within their `postInit`-methods that are executed after initialization. Those cycles are detected by keeping track of the currently running postInit methods and throwing an exception.\n\nThe service creation is thread safe, so accessing a non-initialized service with a long-running init or postInit method from two different threads will block one of the threads.\n\n\nBugs\n----\n\nBug reports, suggestions for improvements etc. are always welcome!",
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