import base64

def convert(image):
    f = open(image)
    img_raw_data = f.read()
    f.close()

    img_b64_string = base64.b64encode(img_raw_data)
    convert_img_raw_data = base64.b64decode(img_b64_string)

    t = open("example.png", "w+")
    t.write(convert_img_raw_data)
    t.close()

if __name__ == "__main__":
    convert("test.png")