Just put an image at ./dec.jpg (or any other image you like) and input your names and you're all set to print as many door decs as you need. Work saved.

doordecs.py

import PIL
from PIL import ImageFont
from PIL import Image
from PIL import ImageDraw
font = ImageFont.truetype("/usr/share/fonts/dejavu/DejaVuSans.ttf", 75)

namelist = [
    # names go here
]


splitnames = []

for i in range(0, len(namelist), 4):
    sublist = []
    for j in range(i, i + 4):
        try:
            sublist.append(namelist[j])
        except IndexError:
            sublist.append("")
    splitnames.append(sublist)

img_num = 1
for n1, n2, n3, n4 in splitnames:
    img = Image.open('dec.jpg')
    draw = ImageDraw.Draw(img)
    draw.text((100, 150), n1, (0, 0, 0), font=font)
    draw.text((730, 150), n2, (0, 0, 0), font=font)
    draw.text((100, 550), n3, (0, 0, 0), font=font)
    draw.text((730, 550), n4, (0, 0, 0), font=font)
    draw = ImageDraw.Draw(img)
    img.save("doordec_%s.png" % img_num)
    img_num += 1