zca_adapts_example.py

from zope import interface
from zope import component


class ISocket(interface.Interface):
    pins = interface.Attribute("""pins of socket""")


class ISocket2(ISocket):
    def connect_socket_2_pins():
        """Connect in socket"""


class ISocket3(ISocket):
    def connect_socket_3_pins():
        """Connect in socket"""


@interface.implementer(ISocket2)
class Socket2:
    pins = 2
    def connect_socket_2_pins(self):
        print("Socket connect with {} pins".format(self.pins))


@interface.implementer(ISocket3)
class Socket3:
    pins = 3
    def connect_socket_3_pins(self):
        print("Socket connect with {} pins".format(self.pins))



@interface.implementer(ISocket2)
class Adapter3to2:
    component.adapts(ISocket3)

    pins = 2
    def __init__(self, socket):
        self.context = socket

    def connect_socket_2_pins(self):
        print("Use socket of 3 pins")
        self.context.connect_socket_3_pins()


app = component.getGlobalSiteManager()

app.registerUtility(Socket2(), ISocket, "socket_usa")
app.registerUtility(Socket3(), ISocket, "socket_br")
app.registerAdapter(Adapter3to2, (ISocket3,), ISocket2)

sock2 = app.getUtility(ISocket, "socket_usa")
sock3 = app.getUtility(ISocket, "socket_br")
adapter = app.getAdapter(sock3, ISocket2)

sock2.connect_socket_2_pins()
sock3.connect_socket_3_pins()
adapter.connect_socket_2_pins()