Bump stack number on autoreload fail to 10.

Carreau · Carreau · commit 2936a83c9f0c · 2017-02-07T12:06:12.000-08:00
This would allow for easier to debug error when encountered.
diff --git a/IPython/extensions/autoreload.py b/IPython/extensions/autoreload.py
@@ -252,7 +252,7 @@ def check(self, check_all=False, do_reload=True):
                         del self.failed[py_filename]
                 except:
                     print("[autoreload of %s failed: %s]" % (
-                            modname, traceback.format_exc(1)), file=sys.stderr)
+                            modname, traceback.format_exc(10)), file=sys.stderr)
                     self.failed[py_filename] = pymtime
 
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