picasa和windows系统中都可以为图片添加标签，想自己用python实现这个功能之前用pil读取不出这些信息找了一下PIL.ExifTags好像也没有我要的
求问该怎么做呢
下图中的说明里面的标记部分就是我想修改的
欢迎选择我的课程，让我们一起见证您的进步~~
In addition to supporting EXIF, Picasa also supports IPTC and XMP metadata. Try pyexiv2 (http://tilloy.net/dev/pyexiv2/), which supports all three metadata.
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In addition to supporting EXIF, Picasa also supports IPTC and XMP metadata. Try pyexiv2 (http://tilloy.net/dev/pyexiv2/), which supports all three metadata.