Service Resolution

def __init__(self, services_map=None, scope_cls: Optional[Type[ActivationScope]] = None):
    """
    Initialize a Services provider.
    
    Args:
        services_map: Internal service mapping (typically built by Container)
        scope_cls: Custom ActivationScope class for scoped services
    """

def get(self, desired_type: Union[Type[T], str], scope: Optional[ActivationScope] = None, *, default: Optional[Any] = ...) -> T:
    """
    Get an instance of the specified service type.
    
    Args:
        desired_type: Type or name of service to resolve
        scope: Optional activation scope for scoped services
        default: Default value if service cannot be resolved (raises exception if not provided)
        
    Returns:
        Instance of the requested service type
        
    Raises:
        CannotResolveTypeException: If service cannot be resolved and no default provided
    """

# Build services from container
services = container.build_provider()

# Resolve a service
user_service = services.get(UserService)

# Resolve with scope
with services.create_scope() as scope:
    scoped_service = services.get(ScopedService, scope)

# Resolve with default value
optional_service = services.get(OptionalService, default=None)

def set(self, new_type: Union[Type, str], value: Any):
    """
    Manually set a service instance in the provider.
    
    Args:
        new_type: Type or name to associate with the value
        value: Service instance to set
    """

def create_scope(self, scoped: Optional[Dict[Union[Type, str], Any]] = None) -> ActivationScope:
    """
    Create a new activation scope for scoped services.
    
    Args:
        scoped: Optional dictionary of pre-scoped services
        
    Returns:
        New ActivationScope instance
    """

def get_executor(self, method: Callable) -> Callable:
    """
    Create an optimized executor for a method with dependency injection.
    
    Args:
        method: Method to create executor for
        
    Returns:
        Optimized callable that automatically injects dependencies
    """

def business_method(user_service: UserService, logger: Logger):
    # Method implementation
    pass

# Create executor
executor = services.get_executor(business_method)

# Execute with automatic dependency injection
result = executor()

def exec(self, method: Callable, scoped: Optional[Dict[Type, Any]] = None) -> Any:
    """
    Execute a method with automatic dependency injection.
    
    Args:
        method: Method to execute
        scoped: Optional dictionary of scoped services for this execution
        
    Returns:
        Return value of the executed method
    """

def handle_request(user_service: UserService, request_id: str):
    return user_service.process_request(request_id)

# Execute with dependency injection
result = services.exec(handle_request, {"request_id": "12345"})

# Execute with scoped services
scoped_services = {RequestContext: RequestContext("current_request")}
result = services.exec(handle_request, scoped=scoped_services)

def __contains__(self, item):
    """Check if a service type is registered."""

def __getitem__(self, item):
    """Get a service instance using bracket notation."""

def __setitem__(self, key, value):
    """Set a service instance using bracket notation."""

# Check if service is registered
if UserService in services:
    user_service = services[UserService]

# Set service using bracket notation
services[Logger] = ConsoleLogger()

# Get service using bracket notation
logger = services[Logger]