How to delete a raster file after opening the raster in rioxarray

Question

I wanted to able to delete a temporary file, after opening it with rioxarray and start to process the final product.

I followed two ideas:

a)

with rioxarray.open_rasterio(temp_file) as raster:
  # do processing
  # save output
os.remove(file)

b)

raster = rioxarray.open_rasterio(temp_file)
# do processing
# save result somewhere
del raster
gc.collect()
os.remove(file)

Both didn't work because, the file was still opened. How can this temporary file be deleted?

Answer 1

xarray leaves the files open unless you call close. You can read more about it here: http://xarray.pydata.org/en/stable/io.html

The file_cache_maxsize option is also useful to know about: http://xarray.pydata.org/en/stable/generated/xarray.set_options.html