Node type 'NamedExpr': No transformation for the node

[markb-trustifi]

I have such python code:

if (info := _getMsgClassInfo(classType))[0]:
   if info[1]:
      raise UnsupportedMSGTypeError(f'Support for MSG type "{ct}" has been refused. See {constants.REPOSITORY_URL}/issues/{info[1]} for more information.')
   raise UnsupportedMSGTypeError(f'MSG type "{ct}" currently is not supported by the module. If you would like support, please make a feature request.')

Where _getMsgClassInfo is some class.
When I translate it with PJ I get this error:
TransformationError: Node type 'NamedExpr': Line: 173, column: 12. No transformation for the node
When I replace ":=" with "=", I get this error:
SyntaxError: invalid syntax. Maybe you meant '==' or ':=' instead of '='? (<unknown>, line 173)

[azazel75]

The first error is because the walrus operator isn't supported yet, the second is because it's just invalid in plain Python