class UnknownPixelFormatException(Exception):
    pass

class InvalidMagic(Exception):
    pass


class InvalidEncryptionKey(Exception):
    pass

class ParserException(Exception):
    pass
class UnknownPixelFormatException(Exception):
    pass

class InvalidMagic(Exception):
    pass


class InvalidEncryptionKey(Exception):
    pass

class ParserException(Exception):
    pass