~osomon/pyexiv2/pyexiv2-0.3

#!/usr/bin/python

# -*- coding: utf-8 -*-

from pyexiv2 import ImageMetadata

import sys, os

from datetime import datetime, date

def print_key_value(metadata, key):

    print key, '=', metadata[key]

if __name__ == '__main__':

    # Read an image file's metadata

    image_file = sys.argv[1]

    metadata = ImageMetadata(image_file)

    metadata.read()

    # Print a list of all the keys of the EXIF tags in the image

    print 'EXIF keys:', metadata.exif_keys

    try:

        # Print the value of the Exif.Image.DateTime tag

        key = 'Exif.Image.DateTime'

        print_key_value(metadata, key)

        # Set the value of the Exif.Image.DateTime tag

        metadata[key] = datetime.now()

        print_key_value(metadata, key)

    except KeyError:

        print '[not set]'

    # Add a new tag

    key = 'Exif.Image.Orientation'

    metadata[key] = 1

    print_key_value(metadata, key)

    # Print a list of all the keys of the IPTC tags in the image

    print os.linesep, 'IPTC keys:', metadata.iptc_keys

    try:

        # Print the value of the Iptc.Application2.DateCreated tag

        key = 'Iptc.Application2.DateCreated'

        print_key_value(metadata, key)

        # Set the value of the Iptc.Application2.DateCreated tag

        metadata[key] = [date.today()]

        print_key_value(metadata, key)

    except KeyError:

        print '[not set]'

    # Add a new tag

    key = 'Iptc.Application2.Keywords'

    keywords = ['little', 'big', 'man']

    metadata[key] = keywords

    print_key_value(metadata, key)

    # Print a list of all the keys of the XMP tags in the image

    print os.linesep, 'XMP keys:', metadata.xmp_keys

    try:

        # Print the value of the Xmp.dc.subject tag

        key = 'Xmp.dc.subject'

        print_key_value(metadata, key)

        # Set the value of the Xmp.dc.subject tag

        metadata[key] = keywords

        print_key_value(metadata, key)

    except KeyError:

        print '[not set]'

    # Add a new tag

    key = 'Xmp.dc.title'

    metadata[key] = {'x-default': 'Sunset', 'fr': 'Coucher de soleil'}

    print_key_value(metadata, key)

    # Write back the metadata to the file

    metadata.write()