small fixes for q7s-cp script

scripts/q7s-cp.py

@@ -4,6 +4,9 @@ import os
 import sys
 
 
+DEFAULT_PORT = 1539
+
+
 def main():
     args = handle_args()
     cmd = build_cmd(args)
@@ -20,7 +23,7 @@ def prompt_ssh_key_removal():
     do_remove_key = input(
         "Do you want to remove problematic keys on localhost ([Y]/n)?: "
     )
-    if not do_remove_key.lower() in ["y", "yes", "1", ""]:
+    if do_remove_key.lower() not in ["y", "yes", "1", ""]:
         sys.exit(1)
     port = 0
     while True:
@@ -54,7 +57,7 @@ def handle_args():
         "If files are copied back to host, will be current directory by default",
         default="",
     )
-    parser.add_argument("-P", "--port", help="Target port", default=1535)
+    parser.add_argument("-P", "--port", help="Target port", default=DEFAULT_PORT)
     parser.add_argument(
         "-i",
         "--invert",