From 4962816d43201087610844e4dc188b819e48eaf6 Mon Sep 17 00:00:00 2001
From: Jan Pieter Waagmeester <jieter@zostera.nl>
Date: Sat, 19 Oct 2019 09:49:44 +0200
Subject: [PATCH] Add invalid accessor string to error message

---
 django_tables2/utils.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/django_tables2/utils.py b/django_tables2/utils.py
index 3a7eeef7..4278569f 100644
--- a/django_tables2/utils.py
+++ b/django_tables2/utils.py
@@ -288,7 +288,9 @@ class Accessor(str):
 
     def __new__(cls, value):
         if "." in value:
-            raise ValueError("Use '__' to separate path components, not '.'.")
+            raise ValueError(
+                "Use '__' to separate path components, not '.' in accessor '{}'.".format(value)
+            )
         return super().__new__(cls, value)
 
     def resolve(self, context, safe=True, quiet=False):