Code format and fix unit test.

Author: shibd

pulsar/__init__.py

@@ -615,9 +615,11 @@ def create_producer(self, topic,
         crypto_key_reader: CryptoKeyReader, optional
             Symmetric encryption class implementation, configuring public key encryption messages for the producer
             and private key decryption messages for the consumer
-        access_mode: ProducerAccessMode, default=ProducerAccessMode.Shared
+        access_mode: ProducerAccessMode, optional
             Set the type of access mode that the producer requires on the topic.
+
             Supported modes:
+
             * Shared: By default multiple producers can publish on a topic.
             * Exclusive: Require exclusive access for producer.
                          Fail immediately if there's already a producer connected.

tests/pulsar_test.py

@@ -216,7 +216,7 @@ def test_producer_access_mode_exclusive_with_fencing(self):
         assert producer2.producer_name() == 'p-2'
 
         # producer1 will be fenced.
-        with self.assertRaises(pulsar.ProducerFenced):
+        with self.assertRaises((pulsar.ProducerFenced, pulsar.AlreadyClosed)):
             producer1.send('test-msg'.encode('utf-8'))
 
         producer2.close()