From 4cbd0e14be6140b0d71eacfa41451a33e73c2361 Mon Sep 17 00:00:00 2001
From: Nautics889 <cyberukr@gmail.com>
Date: Sun, 10 Sep 2023 17:31:54 +0300
Subject: [PATCH] chore: type hint issue

* (chore): update return type for `df_type` function
---
 pandasai/helpers/df_info.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pandasai/helpers/df_info.py b/pandasai/helpers/df_info.py
index ac3de91f3..a22dd5b90 100644
--- a/pandasai/helpers/df_info.py
+++ b/pandasai/helpers/df_info.py
@@ -11,7 +11,7 @@
     DataFrameType = Union[pd.DataFrame, str]
 
 
-def df_type(df: DataFrameType) -> str:
+def df_type(df: DataFrameType) -> Union[str, None]:
     """
     Returns the type of the dataframe.