[3.11] gh-90300: Reformat the Python CLI help output (GH-115847) (GH-116418)

(cherry picked from commit 2e92ffd7fa89e3bd33ee2f31541d3dc53aaa2d12)
(cherry picked from commit 2bdd1d6f15d5507a9ed6dff10e9fb57e2a8c0b40)

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