Move the username argument in the Redis and Connection classes to the end

This helps those poor souls that specify all their connection options as
non-keyword arguments.

Fixes #1276

Author: andymccurdy

CHANGES

@@ -1,4 +1,7 @@
 * 3.4.1 (in development)
+    * Move the username argument in the Redis and Connection classes to the
+      end of the argument list. This helps those poor souls that specify all
+      their connection options as non-keyword arguments. #1276
     * Prior to ACL support, redis-py ignored the username component of
       Connection URLs. With ACL support, usernames are no longer ignored and
       are used to authenticate against an ACL rule. Some cloud vendors with

redis/client.py

@@ -674,7 +674,7 @@ def from_url(cls, url, db=None, **kwargs):
         return cls(connection_pool=connection_pool)
 
     def __init__(self, host='localhost', port=6379,
-                 db=0, username=None, password=None, socket_timeout=None,
+                 db=0, password=None, socket_timeout=None,
                  socket_connect_timeout=None,
                  socket_keepalive=None, socket_keepalive_options=None,
                  connection_pool=None, unix_socket_path=None,
@@ -685,7 +685,7 @@ def __init__(self, host='localhost', port=6379,
                  ssl_cert_reqs='required', ssl_ca_certs=None,
                  ssl_check_hostname=False,
                  max_connections=None, single_connection_client=False,
-                 health_check_interval=0, client_name=None):
+                 health_check_interval=0, client_name=None, username=None):
         if not connection_pool:
             if charset is not None:
                 warnings.warn(DeprecationWarning(

redis/connection.py

@@ -490,14 +490,13 @@ def read_response(self):
 class Connection(object):
     "Manages TCP communication to and from a Redis server"
 
-    def __init__(self, host='localhost', port=6379, db=0, username=None,
-                 password=None, socket_timeout=None,
-                 socket_connect_timeout=None, socket_keepalive=False,
-                 socket_keepalive_options=None, socket_type=0,
-                 retry_on_timeout=False, encoding='utf-8',
+    def __init__(self, host='localhost', port=6379, db=0, password=None,
+                 socket_timeout=None, socket_connect_timeout=None,
+                 socket_keepalive=False, socket_keepalive_options=None,
+                 socket_type=0, retry_on_timeout=False, encoding='utf-8',
                  encoding_errors='strict', decode_responses=False,
                  parser_class=DefaultParser, socket_read_size=65536,
-                 health_check_interval=0, client_name=None):
+                 health_check_interval=0, client_name=None, username=None):
         self.pid = os.getpid()
         self.host = host
         self.port = int(port)