[RF] Fix some memory leaks in Python tutorials

[guitargeek]

To check if this would fix the Ubuntu 24.10 builds.

[github-actions[bot]]

Test Results

    14 files      14 suites   3d 10h 29m 44s :stopwatch:  2 704 tests  2 584 :white_check_mark: 0 :zzz: 120 :x: 35 704 runs  35 571 :white_check_mark: 0 :zzz: 133 :x:

For more details on these failures, see this check.

Results for commit ba617a31.

:recycle: This comment has been updated with latest results.

[guitargeek]

Superseeded by #16837.