Class NonMetaInterface

Known Subclasses:

IConnector, ICollection, IService, IProtocolFactory, IConfigurator, IResource, IDomain, IConsumer, ICredentialsChecker, ICredentials, IRealm, IPerspective, IClient, IGroup, IConversation, IAccount, IPerson, IChatUI, IGroupConversation, IDelayedCall, IReactorMulticast, IUDPTransport, IReactorPluggableResolver, IFileDescriptor, IReactorSSL, IReactorArbitrary, IUDPConnectedTransport, ITransport, IResolverSimple, IReactorUNIX, IReactorCore, IServiceCollection, IProducer, IReactorTCP, IReactorTime, IListeningPort, IReactorFDSet, IReactorUDP, IProtocol, IMulticastTransport, IReactorProcess, IReactorThreads, IMessage, IManholeClient, ICommand, ICommandLog, IHeaderSaver, IBucketFilter, IMailboxListener, IClientAuthentication, IAccount, IServerAuthentication, IMailbox, IRawPacketProtocol, IMailbox, IRawDatagramProtocol, IUnjellyable, IJellyable, IRemoteReporter, ITestRunner, IModel, IController, IWovenLivePage, IView, INodeMutator, IWordsClient, IWordsPolicy, ITypeMapper

Base class for interfaces.

Interfaces define and document an interface for a class. An interface class's name must begin with I, and all its methods should have no implementation code.

Objects that implement an interface should have an attribute __implements__, that should be either an Interface subclass or a tuple, or tuple of tuples, of such Interface classes.

A class whose instances implement an interface should list the interfaces its instances implement in a class-level __implements__.

   | class IAdder(Interface):
   |     'Objects implementing this interface can add objects.'
   |
   |     def add(self, a, b):
   |         'Add two objects together and return the result.'
   |
   | class Adder:
   |
   |     __implements__ = IAdder
   |
   |     def add(self, a, b):
   |         return a + b