From 2ad17e19eec7f873005a215a00c13520c679d4fb Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <python@rcn.com>
Date: Sat, 30 Oct 2010 08:17:46 +0000
Subject: [PATCH] Issue 10221: Improve error message for dict.pop().

---
 Misc/NEWS            | 3 +++
 Objects/dictobject.c | 3 +--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/Misc/NEWS b/Misc/NEWS
index eeff4a77607..dc5dca453fb 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,9 @@ What's New in Python 2.7.1?
 Core and Builtins
 -----------------
 
+- Issue #10221: dict.pop(k) now has a key error message that includes the
+  missing key (same message d[k] returns for missing keys).
+
 - Issue #10125: Don't segfault when the iterator passed to ``file.writelines()``
   closes the file.
 
diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index def3da9af0e..3670e974ad0 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -1980,8 +1980,7 @@ dict_pop(PyDictObject *mp, PyObject *args)
             Py_INCREF(deflt);
             return deflt;
         }
-        PyErr_SetString(PyExc_KeyError,
-                        "pop(): dictionary is empty");
+        set_key_error(key);
         return NULL;
     }
     if (!PyString_CheckExact(key) ||