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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_service_from_display_name(displayName):
 """ Get the service unique name given its display name. @see: L{get_service} @type displayName: str @param displayName: Service display name. You can get this value from the C{DisplayName} member of the service descriptors returned by L{get_services} or L{get_active_services}. @rtype: str @return: Service unique name. """

        with win32.OpenSCManager(
            dwDesiredAccess = win32.SC_MANAGER_ENUMERATE_SERVICE
        ) as hSCManager:
            return win32.GetServiceKeyName(hSCManager, displayName)