Issue #26778: Fixed "a/an/and" typos in code comment and documentation.
diff --git a/Lib/test/test_cmd.py b/Lib/test/test_cmd.py
index 2cb2c88..5101484 100644
--- a/Lib/test/test_cmd.py
+++ b/Lib/test/test_cmd.py
@@ -110,7 +110,7 @@
     5  12  19
     6  13
 
-    This is a interactive test, put some commands in the cmdqueue attribute
+    This is an interactive test, put some commands in the cmdqueue attribute
     and let it execute
     This test includes the preloop(), postloop(), default(), emptyline(),
     parseline(), do_help() functions