diff -r 9c6d11d22801 Lib/traceback.py
--- a/Lib/traceback.py	Sat Jul 25 12:11:00 2015 +0300
+++ b/Lib/traceback.py	Sat Jul 25 22:01:10 2015 +0300
@@ -431,10 +431,8 @@ class TracebackException:
         # being called with no type or value (None, None, None).
         if (exc_value and exc_value.__cause__ is not None
             and exc_value.__cause__ not in _seen):
-            cause = TracebackException(
-                type(exc_value.__cause__),
+            cause = self.from_exception(
                 exc_value.__cause__,
-                exc_value.__cause__.__traceback__,
                 limit=limit,
                 lookup_lines=False,
                 capture_locals=capture_locals,
@@ -443,10 +441,8 @@ class TracebackException:
             cause = None
         if (exc_value and exc_value.__context__ is not None
             and exc_value.__context__ not in _seen):
-            context = TracebackException(
-                type(exc_value.__context__),
+            context = self.from_exception(
                 exc_value.__context__,
-                exc_value.__context__.__traceback__,
                 limit=limit,
                 lookup_lines=False,
                 capture_locals=capture_locals,
@@ -477,10 +473,9 @@ class TracebackException:
             self._load_lines()
 
     @classmethod
-    def from_exception(self, exc, *args, **kwargs):
+    def from_exception(cls, exc, *args, **kwargs):
         """Create a TracebackException from an exception."""
-        return TracebackException(
-            type(exc), exc, exc.__traceback__, *args, **kwargs)
+        return cls(type(exc), exc, exc.__traceback__, *args, **kwargs)
 
     def _load_lines(self):
         """Private API. force all lines in the stack to be loaded."""