Close #138. Convert Decimal() objects to float() during serialization

Author: cpsievert

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * Fixed a bug with multiple altair outputs not working inside a `@shiny.render.ui` decorator. (#140)
 * `@render_widget` no longer errors out when giving a `altair.FacetChart` class. (#142)
+* `@render_widget` no longer fails to serialize `decimal.Decimal` objects. (#138)
 
 ## [0.3.1] - 2024-03-01
 

shinywidgets/_serialization.py

@@ -1,3 +1,4 @@
+import decimal
 import json
 import numbers
 import warnings
@@ -44,6 +45,9 @@ def json_default(obj: object) -> object:
     if isinstance(obj, numbers.Real):
         return float(obj)
 
+    if isinstance(obj, decimal.Decimal):
+        return float(obj)
+
     raise TypeError("%r is not JSON serializable" % obj)