Terry J. Reedy added the comment:
The 3.5 version of 2015 Dec 6 is 3.5.1. A traceback is not a crash for the
purpose of this tracker.
It is generally a good idea to mention OS, OS version, and Tk Version. (IDLE
displays TkVersion in Help => About IDLE.) However, on Win 10 (8.6.4), I was
able to reproduce with all four of the .selection_xyz(items) methods, which are
all specializations of the .selection(op, items) methods.
import tkinter as tk
from tkinter import ttk
root = tk.Tk()
tree = ttk.Treeview(root)
tree.pack()
tree.insert('', 1, iid='a b', text='id with space')
for item in tree.get_children():
print(item)
#tree.selection_add(item) # fail
#tree.selection_toggle(item) # fail
#tree.selection_set(item) # fail
#tree.selection_remove(item) # fail
tree.selection('add', item) # fail
getting
a b
Traceback (most recent call last):
File "F:\Python\mypy\tem.py", line 10, in <module>
tree.selection_toggle(item)
File "C:\Programs\Python35\lib\tkinter\ttk.py", line 1415, in selection_toggle
self.selection("toggle", items)
File "C:\Programs\Python35\lib\tkinter\ttk.py", line 1395, in selection
return self.tk.call(self._w, "selection", selop, items)
_tkinter.TclError: Item a not found
tkinter
These are the only Treeview methods in which a single argument can be multiple
items. The doc string and doc do not define the form of 'items'. The
unofficial but generally helpful doc,
http://infohost.nmt.edu/tcc/help/pubs/tkinter/web/ttk-Treeview.html says "The
argument may be either a single iid or a sequence of iids." I would expect
sequence mean a tuple of strings, not space-separated fields in a string (a tcl
sequence).
The .delete and .detach methods have signature '*items', meaning that each item
is passed as a separate argument. The methods them pass the tuple of strings
to tk. This should have been the signature of the selection methods.
Putting a single string in a tuple solves the problem, as in.
tree.selection('add', (item,))
My suggested fix is to add a statement to .selection
def selection(self, selop=None, items=None):
"""If selop is not specified, returns selected items."""
if isinstance(items, str): # new
items = (items,)
return self.tk.call(self._w, "selection", selop, items)
----------
nosy: +serhiy.storchaka, terry.reedy
type: crash -> behavior
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Python tracker <[email protected]>
<http://bugs.python.org/issue26386>
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