selfie.py

#!/usr/bin/env python

import io
import time
import picamera
import Adafruit_SSD1306
from Adafruit_GPIO import SPI
from PIL import Image

RST = 24
DC = 23
SPI_PORT = 0
SPI_DEVICE = 0

disp = Adafruit_SSD1306.SSD1306_128_64(rst=RST, dc=DC, spi=SPI.SpiDev(SPI_PORT, SPI_DEVICE, max_speed_hz=8000000))
disp.begin()
disp.clear()
disp.display()

def process(stream):
    image = Image.open(stream).convert('1').transpose(Image.FLIP_LEFT_RIGHT)
    disp.image(image)
    disp.display()
    return(False)

with picamera.PiCamera() as camera:
    camera.resolution = (128, 64)
    stream = io.BytesIO()
    while True:
        stream.seek(0)
        camera.capture(stream, format='jpeg')
        stream.truncate()
        stream.seek(0)
        if process(stream):
            break