How to use the gdal.SetConfigOption function in GDAL

pfnProgress, pProgressArg):
                print(
                    "Terminating translation prematurely after failed\n" +
                    "translation from sql statement.")

                return False

            poDS.ReleaseResultSet(poResultSet)


#/* -------------------------------------------------------------------- */
#/*      Special case for layer interleaving mode.                       */
#/* -------------------------------------------------------------------- */
    elif bSrcIsOSM and gdal.GetConfigOption("OGR_INTERLEAVED_READING", None) is None:

        gdal.SetConfigOption("OGR_INTERLEAVED_READING", "YES")

        # if (bSplitListFields)
        #{
        #    fprintf( stderr, "FAILURE: -splitlistfields not supported in this mode\n" );
        #    exit( 1 );
        #}

        nSrcLayerCount = poDS.GetLayerCount()
        pasAssocLayers = [AssociatedLayers() for i in range(nSrcLayerCount)]

#/* -------------------------------------------------------------------- */
#/*      Special case to improve user experience when translating into   */
#/*      single file shapefile and source has only one layer, and that   */
#/*      the layer name isn't specified                                  */
#/* -------------------------------------------------------------------- */

for quality in [90, 75, 30]:
        src_ds = gdal.Open('../gdrivers/data/utm.tif')

        ds = gdal.GetDriverByName('GTiff').Create('tmp/tiff_write_91.tif', 1024, 1024, 3, \
            options = [ 'COMPRESS=JPEG', 'PHOTOMETRIC=YCBCR', 'JPEG_QUALITY=%d' % quality ])

        data = src_ds.GetRasterBand(1).ReadRaster(0, 0, 512, 512, 1024, 1024)
        ds.GetRasterBand(1).WriteRaster(0, 0, 1024, 1024, data)
        ds.GetRasterBand(2).WriteRaster(0, 0, 1024, 1024, data)
        ds.GetRasterBand(3).WriteRaster(0, 0, 1024, 1024, data)
        ds = None

        ds = gdal.Open('tmp/tiff_write_91.tif', gdal.GA_Update)
        gdal.SetConfigOption('JPEG_QUALITY_OVERVIEW', '%d' % quality)
        ds.BuildOverviews( 'NEAR', overviewlist = [2, 4])
        gdal.SetConfigOption('JPEG_QUALITY_OVERVIEW', None)

        src_ds = None
        ds = None

        f = open('tmp/tiff_write_91.tif', 'rb')
        f.seek(0, os.SEEK_END)
        size = f.tell()
        f.close()

        print('quality = %d, size = %d' % (quality, size))

        if quality != 90:
            if size >= last_size:
                gdaltest.post_reason('did not get decreasing file sizes')
                print(size)
                print(last_size)

last_size = 0
    for quality in [90, 75, 30]:

        try:
            os.remove('tmp/tiff_write_93.tif.ovr')
        except:
            pass
        
        ds = gdal.Open('tmp/tiff_write_93.tif')
        gdal.SetConfigOption('COMPRESS_OVERVIEW', 'JPEG')
        gdal.SetConfigOption('JPEG_QUALITY_OVERVIEW', '%d' % quality)
        gdal.SetConfigOption('PHOTOMETRIC_OVERVIEW', 'YCBCR')
        ds.BuildOverviews( 'NEAR', overviewlist = [2, 4])
        gdal.SetConfigOption('COMPRESS_OVERVIEW', None)
        gdal.SetConfigOption('JPEG_QUALITY_OVERVIEW', None)
        gdal.SetConfigOption('PHOTOMETRIC_OVERVIEW', None)
        ds = None

        f = open('tmp/tiff_write_93.tif.ovr', 'rb')
        f.seek(0, os.SEEK_END)
        size = f.tell()
        f.close()

        print('quality = %d, size = %d' % (quality, size))

        if quality != 90:
            if size >= last_size:
                gdaltest.post_reason('did not get decreasing file sizes')
                print(size)
                print(last_size)
                return 'fail'

md = new_ds.GetMetadataItem( 'AREA_OR_POINT' )
    new_ds = None
    src_ds = None
    
    gt_expected = (440690.0, 60.0, 0.0, 3751350.0, 0.0, -60.0)

    if gt != gt_expected:
        print(gt)
        gdaltest.post_reason( 'did not get expected geotransform when ignoring PixelIsPoint' )
        return 'fail'

    if md != 'Point':
        gdaltest.post_reason( 'did not get expected AREA_OR_POINT value' )
        return 'fail'

    gdal.SetConfigOption( 'GTIFF_POINT_GEO_IGNORE', 'FALSE' )

    # read back this file with pixelispoint behavior enabled.
    
    new_ds = gdal.Open( 'tmp/test_97_2.tif' )
    
    gt = new_ds.GetGeoTransform()
    md = new_ds.GetMetadataItem( 'AREA_OR_POINT' )
    new_ds = None
    
    gt_expected = (440660.0, 60.0, 0.0, 3751380.0, 0.0, -60.0)

    if gt != gt_expected:
        print(gt)
        gdaltest.post_reason( 'did not get expected geotransform when ignoring PixelIsPoint (2)' )
        return 'fail'

len = f.tell()
    f.seek(0, 0)
    data = f.read(len-1)
    f.close()
    f = open('tmp/tiff_write_88_src.tif', 'wb')
    f.write(data)
    f.close()
    
    src_ds = gdal.Open('tmp/tiff_write_88_src.tif')
    # for testing only. We need to keep the file to check it was a bigtiff
    gdal.SetConfigOption('GTIFF_DELETE_ON_ERROR', 'NO') 
    gdal.PushErrorHandler('CPLQuietErrorHandler')
    ds = gdaltest.tiff_drv.CreateCopy('tmp/tiff_write_88_dst.tif', src_ds,
            options = ['TILED=YES', 'COPY_SRC_OVERVIEWS=YES', 'ENDIANNESS=LITTLE'])
    gdal.PopErrorHandler()
    gdal.SetConfigOption('GTIFF_DELETE_ON_ERROR', None)
    ds = None
    src_ds = None
    
    f = open('tmp/tiff_write_88_dst.tif', 'rb')
    data = f.read(8)
    f.close()

    os.remove( 'tmp/tiff_write_88_src.tif' )
    os.remove( 'tmp/tiff_write_88_dst.tif' )

    import struct
    ar = struct.unpack('B' * 8, data)
    if ar[2] != 43:
        gdaltest.post_reason('not a BIGTIFF file')
        print(ar)
        return 'fail'

def gdal_configurations(reset=False, max_tmpfile_size=2500):
    if not reset:
        # Whether to enable interleaved reading. Defaults to NO.
        gdal.SetConfigOption('OGR_INTERLEAVED_READING', 'YES')
        # Whether to enable custom indexing. Defaults to YES.
        gdal.SetConfigOption('USE_CUSTOM_INDEXING', 'YES')
        # Whether to compress nodes in temporary DB. Defaults to NO.
        gdal.SetConfigOption('COMPRESS_NODES', 'YES')
        # Maximum size in MB of in-memory temporary file. If it exceeds that value, it will go to disk. Defaults to 100.
        gdal.SetConfigOption('MAX_TMPFILE_SIZE', str(max_tmpfile_size))
    else:
        gdal.SetConfigOption('OGR_INTERLEAVED_READING', 'NO')
        gdal.SetConfigOption('USE_CUSTOM_INDEXING', 'YES')
        gdal.SetConfigOption('COMPRESS_NODES', 'NO')
        gdal.SetConfigOption('MAX_TMPFILE_SIZE', '100')

def gdal_configurations(reset=False, max_tmpfile_size=2500):
    if not reset:
        # Whether to enable interleaved reading. Defaults to NO.
        gdal.SetConfigOption('OGR_INTERLEAVED_READING', 'YES')
        # Whether to enable custom indexing. Defaults to YES.
        gdal.SetConfigOption('USE_CUSTOM_INDEXING', 'YES')
        # Whether to compress nodes in temporary DB. Defaults to NO.
        gdal.SetConfigOption('COMPRESS_NODES', 'YES')
        # Maximum size in MB of in-memory temporary file. If it exceeds that value, it will go to disk. Defaults to 100.
        gdal.SetConfigOption('MAX_TMPFILE_SIZE', str(max_tmpfile_size))
    else:
        gdal.SetConfigOption('OGR_INTERLEAVED_READING', 'NO')
        gdal.SetConfigOption('USE_CUSTOM_INDEXING', 'YES')
        gdal.SetConfigOption('COMPRESS_NODES', 'NO')
        gdal.SetConfigOption('MAX_TMPFILE_SIZE', '100')

def gdal_configurations(reset=False):
    if not reset:
        # Whether to enable interleaved reading. Defaults to NO.
        gdal.SetConfigOption('OGR_INTERLEAVED_READING', 'YES')
        # Whether to enable custom indexing. Defaults to YES.
        gdal.SetConfigOption('USE_CUSTOM_INDEXING', 'YES')
        # Whether to compress nodes in temporary DB. Defaults to NO.
        gdal.SetConfigOption('COMPRESS_NODES', 'NO')
        # Maximum size in MB of in-memory temporary file. If it exceeds that value, it will go to disk. Defaults to 100.
        gdal.SetConfigOption('MAX_TMPFILE_SIZE', '2000')
    else:
        gdal.SetConfigOption('OGR_INTERLEAVED_READING', 'NO')
        gdal.SetConfigOption('USE_CUSTOM_INDEXING', 'YES')
        gdal.SetConfigOption('COMPRESS_NODES', 'NO')
        gdal.SetConfigOption('MAX_TMPFILE_SIZE', '100')

def gdal_configurations(reset=False):
    if not reset:
        # Whether to enable interleaved reading. Defaults to NO.
        gdal.SetConfigOption('OGR_INTERLEAVED_READING', 'YES')
        # Whether to enable custom indexing. Defaults to YES.
        gdal.SetConfigOption('USE_CUSTOM_INDEXING', 'YES')
        # Whether to compress nodes in temporary DB. Defaults to NO.
        gdal.SetConfigOption('COMPRESS_NODES', 'NO')
        # Maximum size in MB of in-memory temporary file. If it exceeds that value, it will go to disk. Defaults to 100.
        gdal.SetConfigOption('MAX_TMPFILE_SIZE', '2000')
    else:
        gdal.SetConfigOption('OGR_INTERLEAVED_READING', 'NO')
        gdal.SetConfigOption('USE_CUSTOM_INDEXING', 'YES')
        gdal.SetConfigOption('COMPRESS_NODES', 'NO')
        gdal.SetConfigOption('MAX_TMPFILE_SIZE', '100')