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Generate images with Python PIL

petercour profile image petercour ・1 min read

You can create your own images with Python code. So how do you start?
First use the PIL module.

The Python Image Library (PIL) lets you work with images in Python.

To create an image of 128x128 pixels with the color red (#FF0000) use:

#!/usr/bin/python3
from PIL import Image

im= Image.new("RGB", (128, 128), "#FF0000")
im.show()
im.show()

Creates the image:

For green and blue you can use "#0000FF" or "#00FF00". It also accepts keywords like "green".

im= Image.new("RGB", (128, 128),"green")

To change a single pixel:

#!/usr/bin/python3
# change pixel                                                                             
pixels = im.load()
pixels[10,10] = (0,0,0)

You can add rectangles to the image:

#!/usr/bin/python3
from PIL import Image

im= Image.new("RGB", (128, 128), "#FF0000")
im.paste((256,256,0),(0,0,100,100))
im.show()

Then

You can do effects like

#!/usr/bin/python3
from PIL import Image

im= Image.new("RGB", (128, 128), "#FF0000")
for i in range(0,256):
    im.paste((256-i,256-i,256-i),(i,i,128,128))
im.show()

Then

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Discussion

markdown guide
 

PIL has been maintained for some time. You should be using pillow.

However I think there should be API partity but I'm not sure if it's in a drop in replacement or not.

But it's always good to k ow how to use this stuff.