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�F��� �� � � � r r c � � e Zd ZdZy)r zAn DNS opcode is unknown.N)r r r �__doc__r r r r r - s � �#r r �text�returnc �, � t j | � S )z�Convert text into an opcode.
*text*, a ``str``, the textual opcode
Raises ``dns.opcode.UnknownOpcode`` if the opcode is unknown.
Returns an ``int``.
)r � from_text)r s r r" r" 1 s � � � � �D� !�!r �flagsc �$ � t | dz dz � S )zpExtract an opcode from DNS message flags.
*flags*, an ``int``, the DNS flags.
Returns an ``int``.
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from_flagsr( > s � � �5�6�>�b�(� )�)r �valuec � � | dz dz S )z�Convert an opcode to a value suitable for ORing into DNS message
flags.
*value*, an ``int``, the DNS opcode value.
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�R�K�6� !�!r c �, � t j | � S )z�Convert an opcode to text.
*value*, an ``int`` the opcode value,
Raises ``dns.opcode.UnknownOpcode`` if the opcode is unknown.
Returns a ``str``.
)r �to_textr+ s r r. r. U s � � �>�>�%� � r c �: � t | � t j k( S )zmIs the opcode in flags UPDATE?
*flags*, an ``int``, the DNS message flags.
Returns a ``bool``.
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