def isValue(self):
        """Indicate that |ASN.1| object represents ASN.1 value.

        If *isValue* is :obj:`False` then this object represents just ASN.1 schema.

        If *isValue* is :obj:`True` then, in addition to its ASN.1 schema features,
        this object can also be used like a Python built-in object (e.g.
        :class:`int`, :class:`str`, :class:`dict` etc.).

        Returns
        -------
        : :class:`bool`
            :obj:`False` if object represents just ASN.1 schema.
            :obj:`True` if object represents ASN.1 schema and can be used as a normal
            value.

        Note
        ----
        There is an important distinction between PyASN1 schema and value objects.
        The PyASN1 schema objects can only participate in ASN.1 schema-related
        operations (e.g. defining or testing the structure of the data). Most
        obvious uses of ASN.1 schema is to guide serialisation codecs whilst
        encoding/decoding serialised ASN.1 contents.

        The PyASN1 value objects can **additionally** participate in many operations
        involving regular Python objects (e.g. arithmetic, comprehension etc).
        """
        if self._currentIdx is None:
            return False

        componentValue = self._componentValues[self._currentIdx]

        return componentValue is not noValue and componentValue.isValue
Indicate that |ASN.1| object represents ASN.1 value.

        If *isValue* is :obj:`False` then this object represents just ASN.1 schema.

        If *isValue* is :obj:`True` then, in addition to its ASN.1 schema features,
        this object can also be used like a Python built-in object (e.g.
        :class:`int`, :class:`str`, :class:`dict` etc.).

        Returns
        -------
        : :class:`bool`
            :obj:`False` if object represents just ASN.1 schema.
            :obj:`True` if object represents ASN.1 schema and can be used as a normal
            value.

        Note
        ----
        There is an important distinction between PyASN1 schema and value objects.
        The PyASN1 schema objects can only participate in ASN.1 schema-related
        operations (e.g. defining or testing the structure of the data). Most
        obvious uses of ASN.1 schema is to guide serialisation codecs whilst
        encoding/decoding serialised ASN.1 contents.

        The PyASN1 value objects can **additionally** participate in many operations
        involving regular Python objects (e.g. arithmetic, comprehension etc).
        
stackoverflow/venv/lib/python3.6/site-packages/pyasn1/type/univ.py