commit e80a232f2cfdab584133d9779c83885c5f9f1ba6
author Serhiy Storchaka <storchaka@gmail.com> Sun Apr 01 02:42:58 2018 +0300
committer GitHub <noreply@github.com> Sun Apr 01 02:42:58 2018 +0300
tree 1a53bfc6880940fedb4b57dc2f22cd14d54b2e53
parent 924035a5e550c9d0bee05c26eadff0e44a0db582

[2.7] bpo-33096: Fix ttk.Treeview.insert. (GH-6228) (GH-6326)

Allow ttk.Treeview.insert to insert iid that has a false boolean value.
Note iid=0 and iid=False would be same.
(cherry picked from commit 3ab44c0783eebdff687014f7d14d5dec59b6bd39)

Co-authored-by: Garvit Khatri <garvitdelhi@gmail.com>

Lib/lib-tk/ttk.py

diff --git a/Lib/lib-tk/ttk.py b/Lib/lib-tk/ttk.py
index 6da1eb1..d4df408 100644
--- a/Lib/lib-tk/ttk.py
+++ b/Lib/lib-tk/ttk.py
@@ -1332,7 +1332,7 @@
         already exist in the tree. Otherwise, a new unique identifier
         is generated."""
         opts = _format_optdict(kw)
-        if iid:
+        if iid is not None:
             res = self.tk.call(self._w, "insert", parent, index,
                 "-id", iid, *opts)
         else: