the Python Send() function will pass a JMP Variable to Python
Here is an example
Names Default To Here( 1 );
x = 2;
Python Send( x );
Python Submit( "print(x)" );
See the JMP Help webpages and the Scripting Index for further documentation.
If you are running JMP 18, there is an embedded installation of Python which allows Python programs to be run in conjunctions with JMP.
Jim