update: stitch_prompt func should be defined by subclass

cht-llama-v2/models.py

@@ -31,28 +31,10 @@ def generate(
     def embeddings(cls, text) -> None:
         pass
 
+    @abstractmethod
     @staticmethod
     def stitch_prompt(messages: list) -> str:
-        system_prompt_template = "<s>[INST] <<SYS>>\n{}\n<</SYS>>\n\n"  # noqa
-        default_system_text = "You are a helpful, respectful and honest assistant. Always answer as helpfully as possible, while being safe.  Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature.\n\nIf a question does not make any sense, or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information."  # noqa
-        user_prompt_template = "{} [/INST] "  # noqa
-        assistant_prompt_template = "{} </s><s>[INST] "  # noqa
-
-        system_prompt, chat_prompt = "", ""
-        for message in messages:
-            role = message["role"]
-            content = message["content"]
-            if role == "system":
-                system_prompt = system_prompt_template.format(content)
-            elif role == "user":
-                chat_prompt += user_prompt_template.format(content)
-            elif role == "assistant":
-                chat_prompt += assistant_prompt_template.format(content)
-
-        if not system_prompt:
-            system_prompt = system_prompt_template.format(default_system_text)
-
-        return system_prompt + chat_prompt
+        pass
 
 
 class LlamaBasedModel(ChatModel):
@@ -110,3 +92,26 @@ def get_model(cls) -> Pipeline:
             )
         cls.stopping_criteria = LlamaStoppingCriteria
         return cls.model
+
+    @staticmethod
+    def stitch_prompt(messages: list) -> str:
+        system_prompt_template = "<s>[INST] <<SYS>>\n{}\n<</SYS>>\n\n"  # noqa
+        default_system_text = "You are a helpful, respectful and honest assistant. Always answer as helpfully as possible, while being safe.  Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature.\n\nIf a question does not make any sense, or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information."  # noqa
+        user_prompt_template = "{} [/INST] "  # noqa
+        assistant_prompt_template = "{} </s><s>[INST] "  # noqa
+
+        system_prompt, chat_prompt = "", ""
+        for message in messages:
+            role = message["role"]
+            content = message["content"]
+            if role == "system":
+                system_prompt = system_prompt_template.format(content)
+            elif role == "user":
+                chat_prompt += user_prompt_template.format(content)
+            elif role == "assistant":
+                chat_prompt += assistant_prompt_template.format(content)
+
+        if not system_prompt:
+            system_prompt = system_prompt_template.format(default_system_text)
+
+        return system_prompt + chat_prompt