Add new procedure to return a python dict from a json file

* gn3/file_utils.py (jsonfile_to_dict): New procedure
* tests/unit/test_file_utils.py: New test-cases.

1 files changed, 10 insertions, 0 deletions

diff --git a/gn3/file_utils.py b/gn3/file_utils.py
index 36e3b6d..79e6854 100644
--- a/gn3/file_utils.py
+++ b/gn3/file_utils.py
@@ -1,8 +1,10 @@
 """Procedures that operate on files/ directories"""
 import hashlib
+import json
 import os
 
 from functools import partial
+from typing import Dict
 
 
 def get_dir_hash(directory: str) -> str:
@@ -34,3 +36,11 @@ Otherwise return ENVIRON_VAR/ROOT_DIR/FILE_NAME.
         if os.path.isfile(_file):
             return _file
     raise FileNotFoundError
+
+
+def jsonfile_to_dict(json_file: str) -> Dict:
+    """Give a JSON_FILE, return a python dict"""
+    with open(json_file) as _file:
+        data = json.load(_file)
+        return data
+    raise FileNotFoundError