How to change the orientation from portrait to landscape and landscape to portrait when creating a PDF

Good morning.

I need help with this situation to use orientations in the file PDF.

I understand to create PDF to need reportlab and rst2pdf.

I tryed with modificate the files in rst2pdf:

- flowables.py
- genelements.py
- utils.py

But I don´t get good result.

Example to file rst:

.. raw:: pdf

   landscape

Text in landscape

.. raw:: pdf

  portrait