could not find the location where Screen.capture(region) stores the image

Im trying to find the location where the temporary image captured by Screen.capture(image) is stored in my machine. Please find the code im using.

from org.sikuli.script import Region, Screen
import shutil
from org.sikuli.script import ScreenImage

reg = Region(0,0,1600,900)
objvalue = Screen(0)
pathvalue = objvalue.capture(reg)
#shutil.move(pathvalue,"C:\Users\KESUBRAMANIAN\Desktop\test.png")
print(pathvalue)

On running the above code, the value printed is 'org.sikuli.script.ScreenImage@969fb8'. I could not find this in Temp folder.
Also, i could not move the image using shutil.move function and it throws an error stating

TypeError: coercing to Unicode: need string, org.sikuli.script.ScreenImage type found