bpo-27319, bpo-31508: Document deprecation in Treeview.selection(). (#3667)
Defer removing old behavior to 3.8.
Document new feature of selection_set() and friends.
diff --git a/Lib/tkinter/ttk.py b/Lib/tkinter/ttk.py
index e1a965e..05c7364 100644
--- a/Lib/tkinter/ttk.py
+++ b/Lib/tkinter/ttk.py
@@ -1404,13 +1404,13 @@
import warnings
warnings.warn(
"The selop=None argument of selection() is deprecated "
- "and will be removed in Python 3.7",
+ "and will be removed in Python 3.8",
DeprecationWarning, 3)
elif selop in ('set', 'add', 'remove', 'toggle'):
import warnings
warnings.warn(
"The selop argument of selection() is deprecated "
- "and will be removed in Python 3.7, "
+ "and will be removed in Python 3.8, "
"use selection_%s() instead" % (selop,),
DeprecationWarning, 3)
else: