def _make_compression_dictionary(cls) -> bytes:
        """Returns a ``bytes`` object suitable for use as a dictionary for
        compression.
        """
        buf = []
        # include package name
        buf.append("numba")
        # include class name
        buf.append(cls.__class__.__name__)
        # include common values
        buf.extend(["True", "False"])
        # include all options name and their default value
        for k, opt in cls.options.items():
            buf.append(k)
            buf.append(str(opt.default))
        return ''.join(buf).encode()
Returns a ``bytes`` object suitable for use as a dictionary for
        compression.
        
numba/core/targetconfig.py