Merge pull request nansencenter#538 from an-ivanov/b2

Update vrt.py to fix python optimization
aperrin66 · Apr 12, 2024 · 45bcb77 · 45bcb77
2 parents 6073cad + a302ed5
commit 45bcb77
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/nansat/vrt.py b/nansat/vrt.py
@@ -1729,7 +1729,10 @@ def _make_source_bands_xml(src_in):
 
         # find DataType of source (if not given in src)
         if src['SourceBand'] > 0 and 'DataType' not in src:
-            raster_band = gdal.Open(src['SourceFilename']).GetRasterBand(src['SourceBand'])
+            # prevent Python from releasing the dataset's handle
+            # prematurely
+            ds = gdal.Open(src['SourceFilename'])
+            raster_band = ds.GetRasterBand(src['SourceBand'])
             src['DataType'] = raster_band.DataType
 
         if 'xSize' not in src or 'ySize' not in src: