How to know current Renderable cameras in Maya using Mel command or python script

Question

I want to know the information of Renderable Camera of layers using MEL command or python in MAYA.

MEL code for Render layers:

$layers = 'ls -type "renderLayer"';

This code gives me render layers but I want Renderable Camera too.Please help me

Expected Output

Layer           Camera

Defaultlayer    Layout_camera:masterCam
second_layer    Layout_camera:masterCam

I have got the Layer but i have stuck on the camera's part.

Answer 1

This code gives me render layers and camera .

$layers = `ls -type "renderLayer"`;

for( $layer in $layers )
   {    
     print($layer);
     print("\n");

     editRenderLayerGlobals -currentRenderLayer $layer;

     string $cameras[] = `ls -type camera`;

     for ($camera in $cameras)
     { 
        if (getAttr ($camera+".renderable"))
            print ($camera+"\n");
     }
}