Got rid of Python 2.3 compatibility global, and thus `OGRGeomType` import...

 Envelope: A ctypes structure for bounding boxes (GDAL library

  not required).

 OGRGeometry: Layer for accessing OGR Geometry objects.

 OGRGeometry: Object for accessing OGR Geometry functionality.

 OGRGeomType: A class for representing the different OGR Geometry

  types (GDAL library not required).

 to a non-existant file location (e.g., `GDAL_LIBRARY_PATH='/null/path'`; 

 setting to None/False/'' will not work as a string must be given).

"""

import sys

# Attempting to import objects that depend on the GDAL library.  The

# HAS_GDAL flag will be set to True if the library is present on

# the system.

except:

    HAS_GDAL, GEOJSON = False, False

# The envelope, error, and geomtype modules do not actually require the

# GDAL library, but still nead at least Python 2.4 and ctypes.

PYTHON23 = sys.version_info[0] == 2 and sys.version_info[1] == 3

if not PYTHON23:

try:

    from django.contrib.gis.gdal.envelope import Envelope

        from django.contrib.gis.gdal.error import check_err, OGRException, OGRIndexError, SRSException

        from django.contrib.gis.gdal.geomtype import OGRGeomType

except ImportError:

    # No ctypes, but don't raise an exception.

    pass

from django.contrib.gis.gdal.error import check_err, OGRException, OGRIndexError, SRSException

from django.contrib.gis.gdal.geomtype import OGRGeomType