Remove the __unicode__ method from exceptions. Allows unicode() to be called

on exception classes.  Would require introducing a tp_unicode slot to make it
work otherwise.

Fixes bug #1551432 and will be backported.

2 files changed, 10 insertions, 2 deletions

diff --git a/Lib/test/test_exceptions.py b/Lib/test/test_exceptions.py
index af07aa8..27d88a0 100644
--- a/Lib/test/test_exceptions.py
+++ b/Lib/test/test_exceptions.py
@@ -304,6 +304,15 @@ class ExceptionTests(unittest.TestCase):
                 return -1
         self.assertRaises(RuntimeError, g)
 
+    def testUnicodeStrUsage(self):
+        # Make sure both instances and classes have a str and unicode
+        # representation.
+        self.failUnless(str(Exception))
+        self.failUnless(unicode(Exception))
+        self.failUnless(str(Exception('a')))
+        self.failUnless(unicode(Exception(u'a')))
+
+
 def test_main():
     run_unittest(ExceptionTests)
 
diff --git a/Lib/test/test_pep352.py b/Lib/test/test_pep352.py
index 251e0be..b2322b0 100644
--- a/Lib/test/test_pep352.py
+++ b/Lib/test/test_pep352.py
@@ -15,8 +15,7 @@ class ExceptionClassTests(unittest.TestCase):
         self.failUnless(issubclass(Exception, object))
 
     def verify_instance_interface(self, ins):
-        for attr in ("args", "message", "__str__", "__unicode__", "__repr__",
-                "__getitem__"):
+        for attr in ("args", "message", "__str__", "__repr__", "__getitem__"):
             self.failUnless(hasattr(ins, attr), "%s missing %s attribute" %
                     (ins.__class__.__name__, attr))