From 47c5474aa0cbe8dc3cf2c370b19769edd3f2e8d8 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Sun, 10 Apr 2016 15:46:30 +0300
Subject: Issue #26623: TypeError message for JSON unserializible object now
 contains object's type name, not object's representation. Based on patch by
 Mahmoud Lababidi.

---
 Lib/json/encoder.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Lib/json/encoder.py b/Lib/json/encoder.py
index d596489..0772bbc 100644
--- a/Lib/json/encoder.py
+++ b/Lib/json/encoder.py
@@ -176,7 +176,8 @@ class JSONEncoder(object):
                 return JSONEncoder.default(self, o)
 
         """
-        raise TypeError(repr(o) + " is not JSON serializable")
+        raise TypeError("Object of type '%s' is not JSON serializable" %
+                        o.__class__.__name__)
 
     def encode(self, o):
         """Return a JSON string representation of a Python data structure.
-- 
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