[py3] Minor fix in django.contrib.gis.

"""

# Python library requisites.

import sys

from binascii import a2b_hex

from binascii import a2b_hex, b2a_hex

from ctypes import byref, string_at, c_char_p, c_double, c_ubyte, c_void_p

# Getting GDAL prerequisites

    @property

    def hex(self):

        "Returns the hexadecimal representation of the WKB (a string)."

        return str(self.wkb).encode('hex').upper()

        #return b2a_hex(self.wkb).upper()

        return b2a_hex(self.wkb).upper()

    @property

    def json(self):