import os import shutil import Image from PIL.ExifTags import TAGS def print_all_known_exif_tags():     for k in sorted(TAGS):         print k, TAGS[k] def print_all_exif_tags(image):     try:         img = Image.open(image)     except Exception, e:         print image, "skipping due to", e     else:         xf = img._getexif()         for tag in xf:             print TAGS.get(tag), xf[tag]     finally:         print 'done' def get_minimum_creation_time(exif_data):     mtime = "?"     if 306 in exif_data and exif_data[306] < mtime: # 306 = DateTime         mtime = exif_data[306]     if 36867 in exif_data and exif_data[36867] < mtime: # 36867 = DateTimeOriginal         mtime = exif_data[36867]     if 36868 in exif_data and exif_data[36868] < mtime: # 36868 = DateTimeDigitized         mtime = exif_data[36868]     return mtime def get_creationdate_with_filename_as_dict(list_of_folders):     print "Processing all image files in:"     result = {}     for folder in list_of_folders:         print "- " + folder         counter = 0         for f in os.listdir(folder):             counter += 1             fullFileName = folder + "\\" + f             try:                 img = Image.open(fullFileName)             except Exception, e:                 print "    Skipping '%s' due to exception: %s"%(f, e)                 continue             mtime = get_minimum_creation_time(img._getexif())             i = 0             while mtime+"_"*i in result:                 i += 1             mtime = mtime+"_"*i             result[mtime] = fullFileName         print "  Found %s orignal files in %s."%(counter, folder)     print "Added total of %s to dictionary."%len(result)     return result def copy_from_image_dict_to_directory(image_dict, output_dir):     assert os.path.exists(output_dir)     for i,key in enumerate(sorted(image_dict)):         dummy, extension =  os.path.splitext(image_dict[key])         new_file_name = key.replace(":", "-") + extension         output_file = output_dir + new_file_name         shutil.copy2(image_dict[key], output_file)     print "Copied %s files to %s"%(i+1, output_dir) if __name__=="__main__":     source_dir = "/var/tmp/images"     output_dir = "/var/tmp/output"     # obtain /var/tmp/images/iPhone, /var/tmp/images/CanonPowerShot, /var/tmp/images/Nikon1     list_of_folders = [source_dir + subfolder for subfolder in os.listdir(source_dir)]     all_files = get_creationdate_with_filename_as_dict(list_of_folders)     copy_from_image_dict_to_directory(all_files, output_dir)