bpo-42630: Improve error reporting in Tkinter for absent default root (GH-23781)
* Tkinter functions and constructors which need a default root window
raise now RuntimeError with descriptive message instead of obscure
AttributeError or NameError if it is not created yet or cannot
be created automatically.
* Add tests for all functions which use default root window.
* Fix import in the pynche script.
diff --git a/Lib/test/test_idle.py b/Lib/test/test_idle.py
index b205d35..8756b76 100644
--- a/Lib/test/test_idle.py
+++ b/Lib/test/test_idle.py
@@ -20,5 +20,5 @@
if __name__ == '__main__':
tk.NoDefaultRoot()
unittest.main(exit=False)
- tk._support_default_root = 1
+ tk._support_default_root = True
tk._default_root = None