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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 from_code(cls, code, **kw):
 """Construct a ``TChannelError`` instance from an error code. This will return the appropriate class type for the given code. """

        return {
            TIMEOUT: TimeoutError,
            CANCELED: CanceledError,
            BUSY: BusyError,
            DECLINED: DeclinedError,
            UNEXPECTED_ERROR: UnexpectedError,
            BAD_REQUEST: BadRequestError,
            NETWORK_ERROR: NetworkError,
            UNHEALTHY: UnhealthyError,
            FATAL: FatalProtocolError,
        }[code](**kw)