message: fix(scripts): make python_build_utils 2.7 compatible again
  there's even a big warning at the top! That I just missed. This needs to
  be able to run under python 2.7 for annoying buildroot reasons.
diff: @@ -41,7 +41,7 @@ def get_version(project, extra_tag=''):
  pkg_json_path = package_entries[project].pkg_json
  builtin_ver = json.load(open(pkg_json_path))['version']
  if extra_tag:
  - version = builtin_ver + f'.dev{extra_tag}'
  + version = builtin_ver + '.dev{}'.format(extra_tag)
  else:
  version = builtin_ver
  return version
  