Explicitly closing a Fieldset (and freeing up underlying NetCDF files)

[VeckoTheGecko]

Is there a way of explicitly closing a Fieldset?

Everytime I rerun my code to create my Fieldset object in Jupyter I get a PermissionError and need to restart my kernel and run everything again:
PermissionError: [Errno 13] Permission denied: <path_to_my_netcdf>

I was looking in the fieldset source and couldn't find any method that looked to do the trick. Also calling del fieldset didn't free up the underlying NetCDF file.

Any advice/insight would be appreciated 🙂

[erikvansebille]

Hi @VeckoTheGecko, the opening and closing of Netcdf files is doen in fieldfilebuffer.py, which does have an exit method:

parcels/parcels/fieldfilebuffer.py

Lines 56 to 57 in 3260033

	def __exit__(self, type, value, traceback):
	self.close()

Does that help?

[VeckoTheGecko]

Seems like that would do it. I can't test it as I can't recreate the error that I was having (I should have saved the state of my code when I encountered it).