special case for serialising Path objects

autoconf/dictable.py

@@ -63,6 +63,12 @@ def to_dict(obj):
         except Exception as e:
             logger.info(e)
 
+    if isinstance(obj, Path):
+        return {
+            "type": "path",
+            "path": str(obj),
+        }
+
     if inspect.isclass(obj):
         return {
             "type": "type",
@@ -177,6 +183,9 @@ def from_dict(dictionary, **kwargs):
         logger.debug(e)
         return None
 
+    if type_ == "path":
+        return Path(dictionary["path"])
+
     if type_ in __parsers:
         return __parsers[type_](dictionary, **kwargs)
 

test_autoconf/test_dictable.py

@@ -2,6 +2,7 @@
 
 import numpy as np
 import pytest
+from pathlib import Path
 
 from autoconf.dictable import to_dict, from_dict, register_parser
 
@@ -73,3 +74,9 @@ def test_register_parser():
 
 def test_no_type():
     assert from_dict({"hi": "there"}) == {"hi": "there"}
+
+
+def test_serialise_path():
+    path = Path("/path/to/file.json")
+    path_dict = to_dict(path)
+    assert from_dict(path_dict) == path