Use pathlib to determine parent directory

This assists with calling the script to generate a file in the current
directory rather than another directory.

No appreciable effects were observed on output files.

Signed-off-by: Alex Nelson <[email protected]>

python/CASE2GeoJSON.py

@@ -1,6 +1,7 @@
 import json
 import sys
 from os.path import exists, isdir, isfile
+from pathlib import Path
 from typing import List
 
 from geotypes import GeoRecord
@@ -22,7 +23,7 @@
     sys.exit(1)
 
 # Ensure the output directory exists
-output_directory: str = output_filename[: output_filename.rfind("/")]
+output_directory: str = str(Path(output_filename).parent.absolute())
 if not exists(output_directory) and not isdir(output_directory):
     print(f"Directory not found: {output_directory}")
     sys.exit(1)