Unwrapped gdal.Envelope import from try-except as fail of `import ctypes` is not expected.

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

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

"""

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

from django.contrib.gis.gdal.error import (  # NOQA

    GDALException, OGRException, OGRIndexError, SRSException, check_err,

)

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

__all__ = [

    'check_err', 'GDALException', 'OGRException', 'OGRIndexError',

    'check_err', 'Envelope', 'GDALException', 'OGRException', 'OGRIndexError',

    'SRSException', 'OGRGeomType', 'HAS_GDAL',

]

    ]

except GDALException:

    HAS_GDAL = False

try:

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

    __all__ += ['Envelope']

except ImportError:

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

    pass