how to use the "imread" command in skiimage to read as well as write? : how to use the read function in scikit-image to read as well as write an image?

"Code written in OpenCV"

         cv2.imwrite(filename, image)
         imagenew = cv2.imread(filename)

"Code written in skiimage"

         filename=imread(image,as_gray=True) 
         imagenew=imread(filename,as_gray=True)

