daypicts.py 文件源码

def picture_type(octets):
    pict_type = imghdr.what(None, octets)
    if pict_type is None:
        if (octets.startswith(b'<') and
                b'<svg' in octets[:200] and
                octets.rstrip().endswith(b'</svg>')):
            pict_type = 'svg'
    return pict_type