bpo-43534: Make dialogs in turtle.textinput() and turtle.numinput() transitient again (GH-24923)

(cherry picked from commit b5adc8a)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

Author: miss-islington

Lib/turtle.py

@@ -826,7 +826,7 @@ def textinput(self, title, prompt):
         >>> screen.textinput("NIM", "Name of first player:")
 
         """
-        return simpledialog.askstring(title, prompt)
+        return simpledialog.askstring(title, prompt, parent=self.cv)
 
     def numinput(self, title, prompt, default=None, minval=None, maxval=None):
         """Pop up a dialog window for input of a number.
@@ -847,7 +847,8 @@ def numinput(self, title, prompt, default=None, minval=None, maxval=None):
 
         """
         return simpledialog.askfloat(title, prompt, initialvalue=default,
-                                     minvalue=minval, maxvalue=maxval)
+                                     minvalue=minval, maxvalue=maxval,
+                                     parent=self.cv)
 
 
 ##############################################################################

Misc/NEWS.d/next/Library/2021-03-18-15-46-08.bpo-43534.vPE9Us.rst

@@ -0,0 +1,2 @@
+:func:`turtle.textinput` and :func:`turtle.numinput` create now a transient
+window working on behalf of the canvas window.