char.py 文件源码

def subtype(self, value=noValue, implicitTag=None, explicitTag=None,
                subtypeSpec=None, encoding=None, binValue=noValue, hexValue=noValue):
        """Creates a copy of a |ASN.1| type or object.

        Any parameters to the *subtype()* method will be added to the corresponding
        properties of the |ASN.1| object.

        Parameters
        ----------
        value: :class:`unicode`, :class:`str`, :class:`bytes` or |ASN.1| object
            unicode object (Python 2) or string (Python 3), alternatively string
            (Python 2) or bytes (Python 3) representing octet-stream of serialized
            unicode string (note `encoding` parameter) or |ASN.1| class instance.

        implicitTag: :py:class:`~pyasn1.type.tag.Tag`
            Implicitly apply given ASN.1 tag object to caller's
            :py:class:`~pyasn1.type.tag.TagSet`, then use the result as
            new object's ASN.1 tag(s).

        explicitTag: :py:class:`~pyasn1.type.tag.Tag`
            Explicitly apply given ASN.1 tag object to caller's
            :py:class:`~pyasn1.type.tag.TagSet`, then use the result as
            new object's ASN.1 tag(s).

        subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection`
            Object representing non-default ASN.1 subtype constraint(s)

        encoding: :py:class:`str`
            Unicode codec ID to encode/decode :py:class:`unicode` (Python 2) or
            :py:class:`str` (Python 3) the payload when |ASN.1| object is used
            in octet-stream context.

        Returns
        -------
        :
            new instance of |ASN.1| type/value

        """
        return univ.OctetString.subtype(self, value, implicitTag, explicitTag, subtypeSpec, encoding, binValue, hexValue)