Using Pillow to Batch Create Animated GIFs

Question

I am trying to use Python to batch edit .png files using the Pillow library. This is my first script using python and as such it is likely that there will be many errors and / or bad programming practices.

Here is my current code:

from PIL import Image from PIL import ImageDraw from os.path import basename import os, sys path = "D:\Pokemon Game\Pokemon Eggs\Import" dirs = os.listdir( path ) box = (2,1,30,31) moveup = (0, -3, -7, -11, -15, -19, -15, -9, -5, 2, 12, 14, 16, 17, 12, 8, 4, 0, -7, -13, -19, -11, -7, -5, -3) topspace = (36, 38, 42, 46, 50, 55, 50, 44, 40, 34, 24, 22, 20, 18, 24, 28, 32, 36, 42, 48, 55, 46, 42, 40, 38) bottomspace = (0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 10, 14, 17, 12, 8, 4, 0, 0, 0, 0, 0, 0, 0, 0) Imagesizes = ((56, 60), (56, 58), (56, 54), (56, 50), (56, 46), (56, 41), (56, 46), (56, 52), (56, 56), (56, 60), (56, 66), (56, 64), (56, 62), (56, 60), (56, 60), (56, 60), (56, 60), (56, 60), (56, 54), (56, 48), (56, 41), (56, 50), (56, 54), (56, 56), (56, 58)) for file in dirs: #Pick an image file you have in the working directory egg = Image.open("D:\Pokemon Game\Pokemon Eggs\Import\%s" % str(file)) #Crops white out of image egg = egg.crop(box) #Resizes image egg = egg.resize((56, 60), Image.NEAREST) #Stretch individual images frames = [] for size in Imagesizes: frames.append(egg.resize(size, Image.NEAREST)) #Resize canvas for each individual image - make sure it is clear for i,image in enumerate(frames): canvassize = (-20, -36 + moveup[i], 76, 60 + moveup[i]) frames[i]=image.crop(canvassize) #Fix transparency for i,image in enumerate(frames): transparent_area1 = (0,0,20,96) transparent_area2 = (76,0,96,96) transparent_area3 = (0,0,96,(topspace[i])) transparent_area4 = (0,(96-bottomspace[i]), 96, 96) image.convert('RGBA') mask=Image.new("1", (96, 96), color=255) draw=ImageDraw.Draw(mask) draw.rectangle(transparent_area1, fill=0) draw.rectangle(transparent_area2, fill=0) draw.rectangle(transparent_area3, fill=0) draw.rectangle(transparent_area4, fill=0) image.putalpha(mask) #Convert to GIF 

My goal is to make the image of the inanimate egg end up looking like the animated image shown below:

The problems with my code are that, firstly, the entire section between line 35 and line 47 leads to a loss of transparency (this is due to line 47). And I don’t know how to convert the list (image) to an animated GIF.