1. Python – May 25 Quiz Python’s imaging library Lab
Creating images
Pretty parenthesizer problem
Questions about homework?

2. PIL Python imaging library Practical note:
First, download if necessary
Defines “Image” and many useful functions
We’ll create images!
Practical note:
Need to add PIL to Python’s search path
“import sys” and print sys.path to see what is ordinarily included
Since sys.path is a list, you can simply append the PIL folder to it…. if necessary

3. 3 steps image = Image.new(“RGB”, (100,100))
First, create image object
image = Image.new(“RGB”, (100,100))
2 parameters are mode and dimensions
Next, paint your pixels
usually in a nested loop of x & y values
image.putpixel((x,y),(red,green,blue))
Finally, write image to file
image.save(“myimage.jpg”)
Does not have to be jpg.
See handout

4. Reference These sections are especially helpful
These sections are especially helpful
Concepts
Image: Easy to use
ImageDraw
A “draw” object can create geometric shapes like circles, rectangles and polygons.
Can also be used to read or modify existing image 
image.getpixel((x, y))  returns RGB tuple