add check to garantee all components of a prompt template are static

synthetic/errors.py

@@ -13,6 +13,10 @@ class ComponentConflictError (PromptTemplateError) :
     """ This error raises if try to add two components with the same name to a template
     """
 
+class DynamicComponentInPromptTemplateError (ProcessLookupError) :
+    """ This error raises if try to add a dynamic component to a PromptTemplate
+    """
+
 class InvalidSignatureError (Error) :
     """ This error raises if the validations checks for a signature fail
     """

synthetic/prompts/base.py

@@ -68,4 +68,8 @@ def _validate_input_variables_appear_in_template (template: str, input_variables
     def _validate_components (components: List[Type[Component]]) -> None :
         component_names = [component.name for component in components]
         if len(component_names) != len(set(component_names)):
-            raise synthetic.ComponentConflictError("Two components cannot have the same name.")
+            raise synthetic.ComponentConflictError("Two components cannot have the same name.")
+
+        dynamic_components = [ c for c in components if c.is_dynamic ]
+        if len(dynamic_components) > 0 :    
+            raise synthetic.DynamicComponentInPromptTemplateError(f"Dynamic components are not allowed in PromptTemplate. Dynamic components: {dynamic_components}.")

test/test_prompt_template.py

@@ -95,4 +95,12 @@ def format(self, name: str, **kwargs) -> str :
                 return f"Hello {name}"
 
         prompt_template = synthetic.PromptTemplate(template="<MyComponent/>", input_variables=[], components=[MyComponent])
-        self.assertRaises(synthetic.PromptTemplateError, prompt_template.format)
+        self.assertRaises(synthetic.PromptTemplateError, prompt_template.format)
+
+    def test_prompt_template_checks_all_components_are_static_and_raises_error_if_try_to_add_a_dynamic_component_to_it (self):
+        class MyComponent (synthetic.Component) :
+            name = "MyComponent"
+            is_dynamic = True
+
+        with self.assertRaises(synthetic.DynamicComponentInPromptTemplateError):
+            prompt_template = synthetic.PromptTemplate(template="<MyComponent/>", input_variables=[], components=[MyComponent])