AutoGPT: Fix prompt state pollution

autogpts/autogpt/autogpt/agents/agent.py

@@ -108,12 +108,13 @@ class Agent(
     def build_prompt(
         self,
         *args,
-        extra_messages: [list[ChatMessage]] = None,
+        extra_messages: Optional[list[ChatMessage]] = None,
         include_os_info: Optional[bool] = None,
         **kwargs,
     ) -> ChatPrompt:
-        if extra_messages is None: 
+        if not extra_messages:
             extra_messages = []
+
         # Clock
         extra_messages.append(
             ChatMessage.system(f"The current time and date is {time.strftime('%c')}"),

autogpts/autogpt/autogpt/agents/base.py

@@ -256,9 +256,9 @@ class BaseAgent(Configurable[BaseAgentSettings], ABC):
         Params:
             cycle_instruction: The final instruction for a thinking cycle
         """
-        if extra_commands is None:
+        if not extra_commands:
             extra_commands = []
-        if extra_messages is None:
+        if not extra_messages:
             extra_messages = []
 
         # Apply additions from plugins

autogpts/autogpt/autogpt/agents/features/context.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any
+from typing import TYPE_CHECKING, Any, Optional
 
 if TYPE_CHECKING:
     from autogpt.core.prompting import ChatPrompt
@@ -49,9 +49,12 @@ class ContextMixin:
     def build_prompt(
         self,
         *args: Any,
-        extra_messages: list[ChatMessage] = [],
+        extra_messages: Optional[list[ChatMessage]] = None,
         **kwargs: Any,
     ) -> ChatPrompt:
+        if not extra_messages:
+            extra_messages = []
+
         # Add context section to prompt
         if self.context:
             extra_messages.insert(

autogpts/autogpt/autogpt/agents/prompt_strategies/one_shot.py

@@ -198,7 +198,7 @@ class OneShotAgentPromptStrategy(PromptStrategy):
         max_prompt_tokens: int,
         count_tokens: Callable[[str], int],
         count_message_tokens: Callable[[ChatMessage | list[ChatMessage]], int],
-        extra_messages: list[ChatMessage] = [],
+        extra_messages: Optional[list[ChatMessage]] = None,
         **extras,
     ) -> ChatPrompt:
         """Constructs and returns a prompt with the following structure:
@@ -209,12 +209,14 @@ class OneShotAgentPromptStrategy(PromptStrategy):
         Params:
             cycle_instruction: The final instruction for a thinking cycle
         """
+        if not extra_messages:
+            extra_messages = []
 
         system_prompt = self.build_system_prompt(
-            ai_config,
-            ai_directives,
-            commands,
-            include_os_info,
+            ai_config=ai_config,
+            ai_directives=ai_directives,
+            commands=commands,
+            include_os_info=include_os_info,
         )
         system_prompt_tlength = count_message_tokens(ChatMessage.system(system_prompt))