From 4a0d56a79379f48e0b9c65e191d9de61830921df Mon Sep 17 00:00:00 2001
From: Ruslan Kuprieiev <kupruser@gmail.com>
Date: Fri, 20 Oct 2023 16:46:14 +0300
Subject: [PATCH] cli: DictAction: set default metavar (#10047)

---
 dvc/cli/utils.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dvc/cli/utils.py b/dvc/cli/utils.py
index 35fee4e767..406d3ca922 100644
--- a/dvc/cli/utils.py
+++ b/dvc/cli/utils.py
@@ -2,6 +2,10 @@
 
 
 class DictAction(argparse.Action):
+    def __init__(self, *args, **kwargs):
+        kwargs.setdefault("metavar", "<name>=<value>")
+        super().__init__(*args, **kwargs)
+
     def __call__(self, parser, args, values, option_string=None):  # noqa: ARG002
         d = getattr(args, self.dest) or {}