This gist is for my medium article about creating GIF images.

gifcreator.py

import imageio
import os
import matplotlib.pyplot as plt

lst1 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
lst2 = [5, 4, 3, 5, 6, 5, 8, 7, 8, 10, 5, 6]
lst3 = [9, 6, 6, 7, 6, 4, 6, 9, 11, 8, 7, 4]


def createfiles():
    for i in range(1, 25):
        if i > 12:
            stopidx = 12
        else:
            stopidx = i
        fig = plt.figure(figsize=(6, 6))
        ax = fig.add_subplot(111)
        plt.yticks((1, 3, 5, 7, 9, 11, 13))
        ax.set_xticklabels([])
        ax.set(xlim=(0.5, 12.5), ylim=(0.000001, 13.99999))
        ax.plot(lst1[:stopidx], lst2[:stopidx], color="red")
        ax.plot(lst1[:stopidx], lst3[:stopidx], color="green")
        plt.savefig("img"+"{:02d}".format(int(i))+".png")


def deletefiles():
    for i in range(1, 25):
        os.remove("img"+"{:02d}".format(int(i))+".png")


def creategif():
    path = 'C:/path/to/file'
    image_folder = os.fsencode(path)
    filenames = []

    for file in os.listdir(image_folder):
        filename = os.fsdecode(file)
        if filename.endswith(('.jpeg', '.png')):
            filenames.append(path+filename)

    filenames.sort() # this iteration technique has no built in order, so sort the frames
    images = list(map(lambda filename: imageio.imread(filename), filenames))
    imageio.mimsave(os.path.join('example.gif'), images, duration = 0.5)


plt.rc('figure', max_open_warning = 0)
createfiles()
creategif()
deletefiles()