diff --git a/ari/__init__.py b/ari/__init__.py
index caafe24..cf2b6e1 100644
--- a/ari/__init__.py
+++ b/ari/__init__.py
@@ -7,9 +7,9 @@
 
 import ari.client
 import swaggerpy.http_client
-import urlparse
+import urllib.parse
 
-Client = client.Client
+Client = ari.client.Client
 
 
 def connect(base_url, username, password):
@@ -18,9 +18,10 @@ def connect(base_url, username, password):
     :param base_url: Base URL for Asterisk HTTP server (http://localhost:8088/)
     :param username: ARI username
     :param password: ARI password.
-    :return:
+    :return: ARI Client instance
+    :rtype: ari.client.Client
     """
-    split = urlparse.urlsplit(base_url)
+    split = urllib.parse.urlsplit(base_url)
     http_client = swaggerpy.http_client.SynchronousHttpClient()
     http_client.set_basic_auth(split.hostname, username, password)
-    return Client(base_url, http_client)
+    return Client(base_url, http_client)
\ No newline at end of file
diff --git a/ari/client.py b/ari/client.py
index c1ce6e7..6261cbd 100644
--- a/ari/client.py
+++ b/ari/client.py
@@ -7,7 +7,7 @@
 
 import json
 import logging
-import urlparse
+import urllib.parse
 import swaggerpy.client
 
 from ari.model import *
@@ -23,7 +23,7 @@ class Client(object):
     """
 
     def __init__(self, base_url, http_client):
-        url = urlparse.urljoin(base_url, "ari/api-docs/resources.json")
+        url = urllib.parse.urljoin(base_url, "ari/api-docs/resources.json")
 
         self.swagger = swaggerpy.client.SwaggerClient(
             url, http_client=http_client)
@@ -192,7 +192,7 @@ def extract_objects(event, *args, **kwargs):
             # If there's only one field in the schema, just pass that along
             if len(obj_fields) == 1:
                 if obj:
-                    obj = obj.values()[0]
+                    obj = list(obj.values())[0]
                 else:
                     obj = None
             event_cb(obj, event, *args, **kwargs)
@@ -295,5 +295,4 @@ def on_sound_event(self, event_type, fn, *args, **kwargs):
         :param kwargs: Keyword arguments to pass to fn
         """
         return self.on_object_event(event_type, fn, Sound, 'Sound',
-                                    *args, **kwargs)
-
+                                    *args, **kwargs)
\ No newline at end of file
diff --git a/ari/model.py b/ari/model.py
index f18ccdc..2344eaf 100644
--- a/ari/model.py
+++ b/ari/model.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Model for mapping ARI Swagger resources and operations into objects.
 
@@ -355,7 +355,7 @@ def promote(client, resp, operation_json):
 
     response_class = operation_json['responseClass']
     is_list = False
-    m = re.match('''List\[(.*)\]''', response_class)
+    m = re.match(r'''List\[(.*)\]''', response_class)
     if m:
         response_class = m.group(1)
         is_list = True
@@ -380,4 +380,4 @@ def promote(client, resp, operation_json):
     'StoredRecording': StoredRecording,
     'Mailbox': Mailbox,
     'DeviceState': DeviceState,
-}
+}
\ No newline at end of file