On 2018-03-16 20:22, Terry Reedy wrote: > On 3/16/2018 6:54 AM, Игорь Яковченко wrote: [snip] >> There is no item with such iid. This item has autogenerated iid just >> like it's not specified. >> I investigated problem and found that in ttk.py, Treeview.insert(... >> iid=None, ...) in method's body has a check: >> if iid: >> res = self.tk.call(self._w, "insert", parent, index, >> "-id", iid, *opts) >> else: >> res = self.tk.call(self._w, "insert", parent, index, *opts) >> It means that if iid is "True" then use it else autogenerate it. >> Maybe there should be "if iid is not None", not "if iid"? Or there are >> some reasons to do check this way? > > It might be that accepting '' as an iid would be a problem. > Our current tkinter expert, Serhiy Storchaka, should know. If so, "if > iid in (None, '')" would be needed. > The root of the tree has the iid ''.
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