.../pyserial> and pyQt5 <http://www.riverbankcomputing.co.uk>.
Check out my modbus master project <http://sourceforge.net/projects/qmodmaster/>.
Checkout the following youtube videos :
Modbus RTU <https://youtu.be/1get1ELKz_A>
Modbus TCP <https://youtu.be/nX_kTQwK2f4>
Session <https://youtu.be/y_9Di7E3y8w>
Log <https://youtu.be/Xcb6sj1uzyY>