check_json_fname

nrv.backend.check_json_fname(fname)

Add “.json” extension is missing at the end of the file name and check if it exists.

Parameters:

• fname (str) – name of the file

• Retruns

• -------

• fname – name of the file with the “.json” extension added if required

• Errors

• ------

• NRV_Error – rised if fname does not exist