Add Chapter 8 python files

thinkcspy/Chapter-8-Exercises/Python-files/Problem10.py

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+# Runestone.Academy thinkcspy course
+# Chapter 8
+# Problem 10
+
+import image
+
+
+img = image.Image("luther.jpg")
+win = image.ImageWin(img.getWidth(), img.getHeight())
+img.draw(win)
+img.setDelay(0)   # setDelay(0) turns off animation
+        
+
+for row in range(img.getHeight()):
+    for col in range(img.getWidth()):
+        p = img.getPixel(col, row)
+        
+        R = p.getRed()
+        G = p.getGreen()
+        B = p.getBlue()
+        
+        newred = (R * 0.393 + G * 0.769 + B * 0.189)
+        newgreen = (R * 0.349 + G * 0.686 + B * 0.168)
+        newblue = (R * 0.272 + G * 0.534 + B * 0.131)
+        
+        newpixel = image.Pixel(newred, newgreen, newblue)
+
+        img.setPixel(col, row, newpixel)
+
+img.draw(win)
+win.exitonclick()