UPDATE

Tests/utils/template.py

@@ -0,0 +1,13 @@
+def render(obj, context):
+
+    if isinstance(obj, dict):
+        return {k: render(v, context) for k, v in obj.items()}
+
+    if isinstance(obj, list):
+        return [render(i, context) for i in obj]
+
+    if isinstance(obj, str):
+        return obj.format(**context)
+
+    return obj
+