本文实例讲述了python用来获得图片exif信息的库用法。分享给大家供大家参考。具体分析如下：
exif-py是一个纯python实现的获取图片元数据的python库，官方下载地址：
http://exif-py.svn.sourceforge.net/viewvc/exif-py/source/exif.py?revision=19&view=markup
下面的代码演示的是调用方法。
复制代码 代码如下:# library test/debug function (dump given files)
if __name__ == '__main__':
    import sys
    import getopt
    # parse command line options/arguments
    try:
        opts, args = getopt.getopt(sys.argv[1:], hqsdt:v, [help, quick, strict, debug, stop-tag=])
    except getopt.getopterror:
        usage(2)
    if args == []:
        usage(2)
    detailed = true
    stop_tag = 'undef'
    debug = false
    strict = false
    for o, a in opts:
        if o in (-h, --help):
            usage(0)
        if o in (-q, --quick):
            detailed = false
        if o in (-t, --stop-tag):
            stop_tag = a
        if o in (-s, --strict):
            strict = true
        if o in (-d, --debug):
            debug = true
    # output info for each file
    for filename in args:
        try:
            file=open(filename, 'rb')
        except:
            print '%s' is unreadable\n%filename
            continue
        print filename + ':'
        # get the tags
        data = process_file(file, stop_tag=stop_tag, details=detailed, strict=strict, debug=debug)
        if not data:
            print 'no exif information found'
            continue
        x=data.keys()
        x.sort()
        for i in x:
            if i in ('jpegthumbnail', 'tiffthumbnail'):
                continue
            try:
                print '   %s (%s): %s' % \
                      (i, field_types[data[i].field_type][2], data[i].printable)
            except:
                print 'error', i, '', data[i], ''
        if 'jpegthumbnail' in data:
            print 'file has jpeg thumbnail'
        print希望本文所述对大家的python程序设计有所帮助。