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#!/usr/bin/python
# -*- coding: utf-8 -*-
from pyexiv2 import ImageMetadata, ExifTag, IptcTag, XmpTag
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].value = datetime.now()
print_key_value(metadata, key)
except KeyError:
print '[not set]'
# Add a new tag
key = 'Exif.Image.Orientation'
metadata[key] = ExifTag(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].values = [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] = IptcTag(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].value = keywords
print_key_value(metadata, key)
except KeyError:
print '[not set]'
# Add a new tag
key = 'Xmp.dc.title'
value = {'x-default': 'Sunset', 'fr': 'Coucher de soleil'}
metadata[key] = XmpTag(key, value)
print_key_value(metadata, key)
# Write back the metadata to the file
metadata.write()
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