Make ExtractorError usable for other causes

1 files changed, 7 insertions, 3 deletions

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 91e180326..8f856ee8c 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -8,6 +8,7 @@ import locale
 import os
 import re
 import sys
+import traceback
 import zlib
 import email.utils
 import json
@@ -414,12 +415,15 @@ def encodeFilename(s):
 class ExtractorError(Exception):
     """Error during info extraction."""
     def __init__(self, msg, tb=None):
-        """ tb is the original traceback (so that it can be printed out) """
+        """ tb, if given, is the original traceback (so that it can be printed out). """
         super(ExtractorError, self).__init__(msg)
-        if tb is None:
-            tb = sys.exc_info()[2]
         self.traceback = tb
 
+    def format_traceback(self):
+        if self.traceback is None:
+            return None
+        return u''.join(traceback.format_tb(self.traceback))
+
 
 class DownloadError(Exception):
     """Download Error exception.