Original file

controls:
- id: AC-1
  levels:
  - high
  - moderate
  - low

- id: AC-2

When i add a new field to mapping, it looks like this, rules is the new added field.It adds a new extra new line.

controls:
- id: AC-1
  levels:
  - high
  - moderate
  - low

  rules: []
- id: AC-2

But i want this, is this possible.

controls:
- id: AC-1
  levels:
  - high
  - moderate
  - low
  rules: []

- id: AC-2

I saw there is a similar question Modifying YAML using ruamel.yaml adds extra new lines, but i believe this is very old.