Issue #25464: Fixed HList.header_exists() in tkinter.tix module by addin
a workaround to Tix library bug.
diff --git a/Lib/tkinter/tix.py b/Lib/tkinter/tix.py
index 7fb4bc5..2ed6a77 100644
--- a/Lib/tkinter/tix.py
+++ b/Lib/tkinter/tix.py
@@ -929,7 +929,11 @@
return self.tk.call(self._w, 'header', 'cget', col, opt)
def header_exists(self, col):
- return self.tk.call(self._w, 'header', 'exists', col)
+ # A workaround to Tix library bug (issue #25464).
+ # The documented command is "exists", but only erroneous "exist" is
+ # accepted.
+ return self.tk.getboolean(self.tk.call(self._w, 'header', 'exist', col))
+ header_exist = header_exists
def header_delete(self, col):
self.tk.call(self._w, 'header', 'delete', col)