1 files changed, 11 insertions, 3 deletions
diff --git a/src/hydrilla/json_instances.py b/src/hydrilla/json_instances.py
index 40b213b..33a3785 100644
--- a/src/hydrilla/json_instances.py
+++ b/src/hydrilla/json_instances.py
@@ -34,6 +34,7 @@ from __future__ import annotations
 import re
 import json
 import os
+import io
 import typing as t
 
 from pathlib import Path, PurePath
@@ -158,15 +159,22 @@ def parse_instance(text: str) -> object:
     """Parse 'text' as JSON with additional '//' comments support."""
     return json.loads(strip_json_comments(text))
 
-InstanceOrPath = t.Union[Path, str, dict[str, t.Any]]
+InstanceOrPathOrIO = t.Union[Path, str, io.TextIOBase, dict[str, t.Any]]
 
-def read_instance(instance_or_path: InstanceOrPath) -> object:
+def read_instance(instance_or_path: InstanceOrPathOrIO) -> object:
     """...."""
     if isinstance(instance_or_path, dict):
         return instance_or_path
 
-    with open(instance_or_path, 'rt') as handle:
+    if isinstance(instance_or_path, io.TextIOBase):
+        handle = instance_or_path
+    else:
+        handle = t.cast(io.TextIOBase, open(instance_or_path, 'rt'))
+
+    try:
         text = handle.read()
+    finally:
+        handle.close()
 
     try:
         return parse_instance(text)