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-rw-r--r--cmd2/constants.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/cmd2/constants.py b/cmd2/constants.py
index 88a1bb82..a88ad1e2 100644
--- a/cmd2/constants.py
+++ b/cmd2/constants.py
@@ -54,3 +54,6 @@ CMD_ATTR_PRESERVE_QUOTES = 'preserve_quotes'
SUBCMD_ATTR_COMMAND = 'parent_command'
SUBCMD_ATTR_NAME = 'subcommand_name'
SUBCMD_ATTR_PARSER_ARGS = 'subcommand_parser_args'
+
+# arpparse attribute linking to command set instance
+PARSER_ATTR_COMMANDSET = 'command_set'