From c50adb382aacfc377255589c64bfd8fdee12ba12 Mon Sep 17 00:00:00 2001
From: Hugo van Kemenade <hugovk@users.noreply.github.com>
Date: Tue, 14 Feb 2023 21:44:46 +0200
Subject: [PATCH] Lazily import pandas to speedup non-pandas use

---
 tabledata/_core.py | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/tabledata/_core.py b/tabledata/_core.py
index 68d47e5..acfbd6a 100644
--- a/tabledata/_core.py
+++ b/tabledata/_core.py
@@ -17,14 +17,6 @@
 from ._logger import logger
 
 
-try:
-    from pandas import DataFrame
-
-    INSTALLED_PANDAS = True
-except ImportError:
-    INSTALLED_PANDAS = False
-
-
 class TableData:
     """
     Class to represent a table data structure.
@@ -428,7 +420,9 @@ def as_dataframe(self) -> "DataFrame":
             - `pandas <https://pandas.pydata.org/>`__
         """
 
-        if not INSTALLED_PANDAS:
+        try:
+            from pandas import DataFrame
+        except ImportError:
             raise RuntimeError("required 'pandas' package to execute as_dataframe method")
 
         dataframe = DataFrame(self.value_matrix)