Please generate a ParaView Python script for the following operations. 
Read in the file named ’ml-100.vtk’. 
Slice the volume in a plane parallel to the y-z plane at x=0.
Take a contour through the slice at the value 0.5. 
Color the contour red. 
Rotate the view to look at the +x direction. 
Save a screenshot of the result in the filename ’ml-slice-iso-screenshot.png’. 
The rendered view and saved screenshot should be 1920 x 1080 pixels.