How to get vertex position and connected vertices?

Technical Support Python Support
6

Have you looked into the Console output?
Using the factory settings, just paste the script into the text editor and run it.
It outputs the following:

No.; Name; Location x; Location y; Location z;
Object: Camera Type: CAMERA
Object: Cube Type: MESH
Processing mesh object: Cube
Mesh data: <bpy_struct, Mesh("Cube") at 0x000002AF47FCF208>
BMesh created
1; Cube; 1.00; 1.00; 1.00;
2; Cube; 1.00; 1.00; -1.00;
3; Cube; 1.00; -1.00; 1.00;
4; Cube; 1.00; -1.00; -1.00;
5; Cube; -1.00; 1.00; 1.00;
6; Cube; -1.00; 1.00; -1.00;
7; Cube; -1.00; -1.00; 1.00;
8; Cube; -1.00; -1.00; -1.00;
Object: Light Type: LIGHT