added handling child lists

config/_config.py

@@ -43,20 +43,29 @@ def merge_list(config: dict) -> None:
 
     for key, it in keys.items():
         for i in range(it + 1):
+            value = config[f"{key}[{i}]"]
             if key not in config:
-                config.update({key: [config[f"{key}[{i}]"]]})
+                config.update({key: [value]})
                 config.pop(f"{key}[{i}]")
             else:
-                config[key].append(config[f"{key}[{i}]"])
+                config[key].append(value)
                 config.pop(f"{key}[{i}]")
 
 
+def _fix_list_items(values: list) -> None:
+    for item in values:
+        if isinstance(item, dict):
+            _merge(item)
+
+
 def _merge(config: dict) -> None:
     merge_list(config)
     for k, v in config.items():
         merge_list(config[k])
         if isinstance(v, dict):
             _merge(v)
+        elif isinstance(v, list):
+            _fix_list_items(v)
 
 
 def _fix_key(key_str: str) -> Tuple[str, bool]:

tests/unit/test_config.py

@@ -46,6 +46,14 @@
             {"examples.three.one[0]": "one", "examples.three.one[1]": "thow"},
             {"examples": {"three": {"one": ["one", "thow"]}}},
         ),
+        (
+            {
+                "main_list[0]": {"child_list[0]": {"property-name": "example0"}},
+            },
+            {
+                "main_list": [{'child_list': [{'property-name': 'example0'}]}],
+            },
+        ),
     ],
 )
 def test_to_dict(data, expected):