Issue #10872: The repr() of TextIOWrapper objects now includes the mode
if available.

(at Georg's request)
diff --git a/Lib/_pyio.py b/Lib/_pyio.py
index 2a6e7a8..3c1e805 100644
--- a/Lib/_pyio.py
+++ b/Lib/_pyio.py
@@ -1504,13 +1504,20 @@
     #   - "chars_..." for integer variables that count decoded characters
 
     def __repr__(self):
+        result = "<_pyio.TextIOWrapper"
         try:
             name = self.name
         except AttributeError:
-            return "<_pyio.TextIOWrapper encoding={0!r}>".format(self.encoding)
+            pass
         else:
-            return "<_pyio.TextIOWrapper name={0!r} encoding={1!r}>".format(
-                name, self.encoding)
+            result += " name={0!r}".format(name)
+        try:
+            mode = self.mode
+        except AttributeError:
+            pass
+        else:
+            result += " mode={0!r}".format(mode)
+        return result + " encoding={0!r}>".format(self.encoding)
 
     @property
     def encoding(self):
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
index ee4e42f..a25d9af 100644
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -1717,9 +1717,12 @@
         raw.name = "dummy"
         self.assertEqual(repr(t),
                          "<%s.TextIOWrapper name='dummy' encoding='utf-8'>" % modname)
+        t.mode = "r"
+        self.assertEqual(repr(t),
+                         "<%s.TextIOWrapper name='dummy' mode='r' encoding='utf-8'>" % modname)
         raw.name = b"dummy"
         self.assertEqual(repr(t),
-                         "<%s.TextIOWrapper name=b'dummy' encoding='utf-8'>" % modname)
+                         "<%s.TextIOWrapper name=b'dummy' mode='r' encoding='utf-8'>" % modname)
 
     def test_line_buffering(self):
         r = self.BytesIO()