EXIF

Stops developing. See also: https://github.com/hMatoba/Piexif

Use EXIF object with PIL or Pillow.

How to Use

from PIL import Image
from EXIF import *

d = {ZerothIFD.ProcessingSoftware: "PIL",
     ZerothIFD.Model: "XXX-XXX",
     ZerothIFD.XResolution: (300, 1),
     ZerothIFD.YResolution: (200, 1),
     ZerothIFD.Rating: 3,
     ExifIFD.DateTimeOriginal: "2099:09:29 10:10:10",
     ExifIFD.Sharpness: 1,
     ExifIFD.LensMake: "LensMake",
     ZerothIFD.GPSTag: {GPSIFD.GPSVersionID: 2,
                        GPSIFD.GPSLatitude: (1, 300),
                        GPSIFD.GPSDateStamp: "1999:99:99 99:99:99"}}
exif = Exif()  # or 'Exif(jpeg_file_path)', 'Exif(tif_file_path)',
               #    'Exif(jpeg_bytes)', 'Exif(tif_bytes)'
exif.update(d)
exif[271] = "Make"
im1 = Image.new("RGBA", (16, 16))
im1.save("im1.jpg", exif=exif.to_bytes())

Environment

Checked on Python 2.6, 2.7, 3.2, 3.3 and 3.4.