python让图片按照exif信息里的创建时间进行排序的方法

本文实例讲述了python让图片按照exif信息里的创建时间进行排序的方法。分享给大家供大家参考。具体分析如下：

我们经常会从不同的设备里取出照片，比如照相机，手机，iphone等等，操作系统记录的创建日期经常 会因为拷贝等原因变动，下面的代码可以给图片按照exif里的创建时间进行排序，非常有用。

代码如下:
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