Tkinter module test: widget class not inserted in application frame

[Rich Shepard]

On Sat, 18 Jun 2022, Peter J. Holzer wrote:

> There is a comma (U+002C) here ...
> And a dot (U+002E) here.

That was a typo when I wrote the message. And I usually add a space after
commas and surrounding equal signs, all for easier reading.

Thank you,

Rich