From 53929295219b98ad763f50aeaf6540eb4f7742fc Mon Sep 17 00:00:00 2001
From: Vardhaman <83634399+cyai@users.noreply.github.com>
Date: Tue, 7 Jun 2022 09:36:40 +0530
Subject: [PATCH] Update call_center.ipynb

---
 solutions/object_oriented_design/call_center/call_center.ipynb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/solutions/object_oriented_design/call_center/call_center.ipynb b/solutions/object_oriented_design/call_center/call_center.ipynb
index c540c6a6..803ee9cc 100644
--- a/solutions/object_oriented_design/call_center/call_center.ipynb
+++ b/solutions/object_oriented_design/call_center/call_center.ipynb
@@ -158,7 +158,7 @@
     "\n",
     "    def dispatch_call(self, call):\n",
     "        if call.rank not in (Rank.OPERATOR, Rank.SUPERVISOR, Rank.DIRECTOR):\n",
-    "            raise ValueError('Invalid call rank: {}'.format(call.rank))\n",
+    "            raise ValueError(f'Invalid call rank: {call.rank}')\n",
     "        employee = None\n",
     "        if call.rank == Rank.OPERATOR:\n",
     "            employee = self._dispatch_call(call, self.operators)\n",