From 1956352b08c219f37ab639f875fcc360ff123f99 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Tue, 13 Oct 1998 16:32:05 +0000
Subject: [PATCH] Clear the linecache before printing a traceback

---
 Tools/idle/PyShell.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Tools/idle/PyShell.py b/Tools/idle/PyShell.py
index cc86c2e9f6..74f8f8a404 100644
--- a/Tools/idle/PyShell.py
+++ b/Tools/idle/PyShell.py
@@ -129,7 +129,14 @@ class ModifiedInterpreter(InteractiveInterpreter):
         # Extend base class method to reset output properly
         text = self.tkconsole.text
         self.tkconsole.resetoutput()
+        self.checklinecache()
         InteractiveInterpreter.showtraceback(self)
+        
+    def checklinecache(self):
+        c = linecache.cache
+        for key in c.keys():
+            if key[:1] + key[-1:] != "<>":
+                del c[key]
 
     def runcode(self, code):
         # Override base class method
-- 
2.50.1