diff --git a/docs/conf.py b/docs/conf.py
index c7da0bc46..efa8d0807 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -12,7 +12,6 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-import sys
 import os
 
 # If extensions (or modules to document with autodoc) are in another directory,
diff --git a/kafka/client_async.py b/kafka/client_async.py
index 5379153c2..caa88cf5e 100644
--- a/kafka/client_async.py
+++ b/kafka/client_async.py
@@ -2,7 +2,6 @@
 
 import collections
 import copy
-import functools
 import logging
 import random
 import socket
diff --git a/kafka/coordinator/base.py b/kafka/coordinator/base.py
index b0e236a06..cd110ce06 100644
--- a/kafka/coordinator/base.py
+++ b/kafka/coordinator/base.py
@@ -3,7 +3,6 @@
 import abc
 import copy
 import logging
-import sys
 import threading
 import time
 import weakref
diff --git a/kafka/scram.py b/kafka/scram.py
index 684925caa..7f003750c 100644
--- a/kafka/scram.py
+++ b/kafka/scram.py
@@ -71,7 +71,6 @@ def create_salted_password(self, salt, iterations):
         )
 
     def final_message(self):
-        client_final_no_proof = 'c=biws,r=' + self.nonce
         return 'c=biws,r={},p={}'.format(self.nonce, base64.b64encode(self.client_proof).decode('utf-8'))
 
     def process_server_final_message(self, server_final_message):