In looking at the doc (e.g. https://docs.djangoproject.com/en/dev/howto/custom-management-commands/), I find nothing about where to define code to be used when defining management commands elsewhere.  I believe that only management commands should be put in management/commands (and this is not a management command).   I haven't seen any example about adding code to management.  This might be a reasonable place, but it's not based on any precedence.