Move "generate_random_n_string" to file_utils

* gn3/computations/gemma.py (generaten_random_n_string): Move to...
* gn3/file_utils.py: ... here.

1 files changed, 8 insertions, 0 deletions

diff --git a/gn3/file_utils.py b/gn3/file_utils.py
index d9301bb..cda4f2b 100644
--- a/gn3/file_utils.py
+++ b/gn3/file_utils.py
@@ -3,6 +3,8 @@ import hashlib
 import json
 import os
 import shutil
+import random
+import string
 import tarfile
 
 from functools import partial
@@ -51,6 +53,12 @@ def jsonfile_to_dict(json_file: str) -> Dict:
     raise FileNotFoundError
 
 
+def generate_random_n_string(n_length: int) -> str:
+    """Generate a random string that is N chars long"""
+    return ''.join(random.choice(string.ascii_uppercase + string.digits)
+                   for _ in range(n_length))
+
+
 def extract_uploaded_file(gzipped_file, target_dir: str) -> Dict:
     """Get the (directory) hash of extracted contents of GZIPPED_FILE; and move
 contents to TARGET_DIR/<dir-hash>.