From c7b6911c7b9a2f596be9a0d021739b5e64d193ab Mon Sep 17 00:00:00 2001
From: mc-marcocheng <mccheng990503@gmail.com>
Date: Tue, 31 Oct 2023 14:38:04 +0800
Subject: [PATCH] Handle empty input edge case

---
 litellm/router.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/litellm/router.py b/litellm/router.py
index c4997e3d5f..970daaf51b 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -162,9 +162,10 @@ class Router:
         current_tpm, current_rpm = self._get_deployment_usage(deployment_name=deployment["litellm_params"]["model"])
 
         # get encoding
-        if messages:
+        token_count = 0
+        if messages is not None:
             token_count = litellm.token_counter(model=deployment["model_name"], messages=messages)
-        elif input:
+        elif input is not None:
             if isinstance(input, List):
                 input_text = "".join(text for text in input)
             else: