From fa23718885d0d0a29851206115851c3fffc9094d Mon Sep 17 00:00:00 2001
From: Andrew Gazelka <andrew.gazelka@gmail.com>
Date: Fri, 4 Oct 2024 19:20:53 -0700
Subject: [PATCH] add docs

---
 daft/expressions/expressions.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/daft/expressions/expressions.py b/daft/expressions/expressions.py
index 13d5650d59..2f9b99d3fb 100644
--- a/daft/expressions/expressions.py
+++ b/daft/expressions/expressions.py
@@ -2930,6 +2930,10 @@ def value_counts(self) -> Expression:
                         original list of type X, and the values are UInt64 counts representing
                         the number of times each element appears in the list.
 
+        Note:
+            This function does not work for nested types. For example, it will not produce a map
+            with lists as keys.
+
         Example:
             >>> import daft
             >>> df = daft.from_pydict({"letters": [["a", "b", "a"], ["b", "c", "b", "c"]]})