commit cd6b8c67ceb4230198de9cdc971b27848c5391f0
author Terry Jan Reedy <tjreedy@udel.edu> Sat May 26 20:23:45 2012 -0400
committer Terry Jan Reedy <tjreedy@udel.edu> Sat May 26 20:23:45 2012 -0400
tree 5b351486ca2641e5cf46f59eff73a6b8707a0374
parent 809309a4822124f46dc98514ccdf818564215f30

Issue #10365: File open dialog now works instead of crashing
even when parent window is closed. Patch by Roger Serwy.

Lib/idlelib/PyShell.py

diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
index 74a37db..edb4f37 100644
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -1435,7 +1435,8 @@
     if tkversionwarning:
         shell.interp.runcommand(''.join(("print('", tkversionwarning, "')")))
 
-    root.mainloop()
+    while flist.inversedict:  # keep IDLE running while files are open.
+        root.mainloop()
     root.destroy()
 
 if __name__ == "__main__":