gh-106625 : Add missing code to tutorial 4.6 example (#106623)

* Added missing import statement.

* Update Doc/tutorial/controlflow.rst

* Update Doc/tutorial/controlflow.rst

* Update controlflow.rst

* Make point regular class with __init__.

---------

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

RustyNail committed 2y ago

d0b7e18262e69dd4b8252e804e4f98fc9533bcd6

Parent: 945d3cb

Committed by GitHub <noreply@github.com> on 7/11/2023, 5:22:07 PM