From fc1ed40442a5971c1db072526f6a9137f7c900c3 Mon Sep 17 00:00:00 2001
From: Kristen Thyng <kthyng@gmail.com>
Date: Fri, 22 Sep 2023 17:12:01 -0500
Subject: [PATCH] relaxed condition to pass through existing keys

---
 cf_pandas/accessor.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cf_pandas/accessor.py b/cf_pandas/accessor.py
index 9c18a4e..7386ff1 100644
--- a/cf_pandas/accessor.py
+++ b/cf_pandas/accessor.py
@@ -107,7 +107,11 @@ def __getitem__(self, key: str) -> Union[pd.Series, pd.DataFrame]:
 
         # if key is a coordinate or axes, use a different method to match
         valid_keys = _COORD_NAMES + _AXIS_NAMES
-        if key in valid_keys:
+        # return the key if it is already a name in the object and doesn't need to be interpreted
+        if key in self._obj.keys():
+            col_names = [key]
+
+        elif key in valid_keys:
             col_names = _get_axis_coord(self._obj, key)
 
         else: