You can use packages (which provide relative imports) to avoid naming conflicts

[RGBCube]

It's a better way, as your program will work when you aren't in the root dir when calling it

For example our file tree looks like this:

arson/
  __init__.py
  __main__.py
  builtins.py

(the init file is needed for it to be a package)

You can import builtins.py from main by adding this to __main__.py:

from . import builtins

print(123)

and you can run your code by running python -m arson where arson is the package directory, this will print 123