Fix Issue8123 - TypeError in urllib when trying to use HTTP authentication
diff --git a/Lib/urllib/request.py b/Lib/urllib/request.py
index 6c4b5f7..24a4797 100644
--- a/Lib/urllib/request.py
+++ b/Lib/urllib/request.py
@@ -1591,13 +1591,13 @@
 
         if proxy_passwd:
             import base64
-            proxy_auth = base64.b64encode(proxy_passwd).strip()
+            proxy_auth = base64.b64encode(proxy_passwd.encode()).strip()
         else:
             proxy_auth = None
 
         if user_passwd:
             import base64
-            auth = base64.b64encode(user_passwd).strip()
+            auth = base64.b64encode(user_passwd.encode()).strip()
         else:
             auth = None
         http_conn = connection_factory(host)