add username to default cache path to avoid conflicts with other user caches

kaldi_data_generator/main.py

@@ -2,6 +2,7 @@
 # -*- coding: utf-8 -*-
 
 import argparse
+import getpass
 import os
 import random
 from collections import Counter
@@ -620,6 +621,8 @@ class KaldiPartitionSplitter:
 
 
 def create_parser():
+    user_name = getpass.getuser()
+
     parser = argparse.ArgumentParser(
         description="Script to generate Kaldi or kraken training data from annotations from Arkindex",
         formatter_class=argparse.ArgumentDefaultsHelpFormatter,
@@ -802,7 +805,7 @@ def create_parser():
     parser.add_argument(
         "--cache_dir",
         type=Path,
-        default=Path("/tmp/kaldi_data_generator/cache/"),
+        default=Path(f"/tmp/kaldi_data_generator_{user_name}/cache/"),
         help="Cache dir where to save the full size downloaded images. Change it to force redownload.",
     )