from PIL import Image


# pip install Pillow

# 获取png的exif信息
def getExif(img):
    with Image.open(img, mode='r', formats=['PNG']) as im:
        fields_to_keep = ('transparency',)
        exif_fields = list(im.info.keys())
        for k in exif_fields:
            if k not in fields_to_keep:
                print(im.info[k])


# 清除png的exif信息
def clearExif(source, target):
    with Image.open(source, mode='r', formats=['PNG']) as im:
        fields_to_keep = ('transparency',)
        exif_fields = list(im.info.keys())
        for k in exif_fields:
            if k not in fields_to_keep:
                del im.info[k]
        im.save(target, format='PNG')
# pip install piexif