def open(self):
        """
        Open the Sender using the supplied conneciton.
        If the handler has previously been redirected, the redirect
        context will be used to create a new handler before opening it.
        :param connection: The underlying client shared connection.
        :type: connection: ~uamqp.connection.Connection
        """
        self.running = True
        if self.redirected:
            self.target = self.redirected.address
            self._handler = SendClient(
                self.target,
                auth=self.client.get_auth(),
                debug=self.client.debug,
                msg_timeout=self.timeout,
                error_policy=self.retry_policy,
                keep_alive_interval=self.keep_alive,
                client_name=self.name,
                properties=self.client.create_properties())
        self._handler.open()
        while not self._handler.client_ready():
            time.sleep(0.05)

def __init__(self, client, target, partition=None, send_timeout=60, keep_alive=None, auto_reconnect=True):
        """
        Instantiate an EventHub event Sender handler.
        :param client: The parent EventHubClient.
        :type client: ~azure.eventhub.client.EventHubClient.
        :param target: The URI of the EventHub to send to.
        :type target: str
        :param partition: The specific partition ID to send to. Default is None, in which case the service
         will assign to all partitions using round-robin.
        :type partition: str
        :param send_timeout: The timeout in seconds for an individual event to be sent from the time that it is
         queued. Default value is 60 seconds. If set to 0, there will be no timeout.
        :type send_timeout: int
        :param keep_alive: The time interval in seconds between pinging the connection to keep it alive during
         periods of inactivity. The default value is None, i.e. no keep alive pings.
        :type keep_alive: int
        :param auto_reconnect: Whether to automatically reconnect the sender if a retryable error occurs.
         Default value is `True`.
        :type auto_reconnect: bool
        """
        self.running = False
        self.client = client
        self.target = target
        self.partition = partition
        self.timeout = send_timeout
        self.redirected = None
        self.error = None
        self.keep_alive = keep_alive
        self.auto_reconnect = auto_reconnect
        self.retry_policy = errors.ErrorPolicy(max_retries=3, on_error=_error_handler)
        self.reconnect_backoff = 1
        self.name = "EHSender-{}".format(uuid.uuid4())
        if partition:
            self.target += "/Partitions/" + partition
            self.name += "-partition{}".format(partition)
        self._handler = SendClient(
            self.target,
            auth=self.client.get_auth(),
            debug=self.client.debug,
            msg_timeout=self.timeout,
            error_policy=self.retry_policy,
            keep_alive_interval=self.keep_alive,
            client_name=self.name,
            properties=self.client.create_properties())
        self._outcome = None
        self._condition = None

if partition:
                self.target += "/Partitions/" + partition
                self.name += "-partition{}".format(partition)