fix: deep copy PromptTemplate config to prevent shared mutable state across agents (#1419)

SoftEgLi · Tomas2D · web-flow · commit 077af0c4e48a · 2026-04-06T09:11:28.000+02:00
Signed-off-by: SoftEgLi &lt;937423396@qq.com&gt;
Co-authored-by: Tomáš Dvořák &lt;toomas2d@gmail.com&gt;
diff --git a/python/beeai_framework/template.py b/python/beeai_framework/template.py
@@ -78,7 +78,7 @@ def __init__(
                 functions=functions or {},
                 defaults=defaults or {},
             )
-        )
+        ).model_copy(deep=True)
 
     def render(self, template_input: ModelLike[T] | None = None, /, **kwargs: Any) -> str:
         input_model = to_model_optional(self._config.input_schema, template_input)

Original file line number	Diff line number	Diff line change
`@@ -78,7 +78,7 @@ def __init__(`
`78`	`78`	`functions=functions or {},`
`79`	`79`	`defaults=defaults or {},`
`80`	`80`	`)`
`81`		`- )`
	`81`	`+ ).model_copy(deep=True)`
`82`	`82`
`83`	`83`	`def render(self, template_input: ModelLike[T] \| None = None, /, **kwargs: Any) -> str:`
`84`	`84`	`input_model = to_model_optional(self._config.input_schema, template_input)`