Add helpers to merge dictionaries and get keys deep inside a dictionary

src/utils/helpers.py

@@ -7,3 +7,22 @@ def is_none_or_empty(item):
 
 def get_absolute_path(filepath):
     return str(pathlib.Path(filepath).expanduser().absolute())
+
+
+def get_from_dict(dictionary, *args):
+    '''null-aware get from a nested dictionary
+       Returns: dictionary[args[0]][args[1]]... or None if any keys missing'''
+    current = dictionary
+    for arg in args:
+        if not hasattr(current, '__iter__') or not arg in current:
+            return None
+        current = current[arg]
+    return current
+
+
+def merge_dicts(priority_dict, default_dict):
+    merged_dict = priority_dict.copy()
+    for k, v in default_dict.items():
+        if k not in priority_dict:
+            merged_dict[k] = default_dict[k]
+    return merged_dict