#1595: set default tc and ldc to None for AgentABC and PrimaiteSession + adding a comment for cli load flag

src/primaite/agents/agent_abc.py

@@ -47,8 +47,8 @@ class AgentSessionABC(ABC):
     @abstractmethod
     def __init__(
         self,
-        training_config_path: Optional[Union[str, Path]] = "",
-        lay_down_config_path: Optional[Union[str, Path]] = "",
+        training_config_path: Optional[Union[str, Path]] = None,
+        lay_down_config_path: Optional[Union[str, Path]] = None,
         session_path: Optional[Union[str, Path]] = None,
     ):
         """

src/primaite/agents/sb3.py

@@ -21,8 +21,8 @@ class SB3Agent(AgentSessionABC):
 
     def __init__(
         self,
-        training_config_path: Optional[Union[str, Path]] = "",
-        lay_down_config_path: Optional[Union[str, Path]] = "",
+        training_config_path: Optional[Union[str, Path]] = None,
+        lay_down_config_path: Optional[Union[str, Path]] = None,
         session_path: Optional[Union[str, Path]] = None,
     ):
         """

src/primaite/cli.py

@@ -162,6 +162,11 @@ def session(tc: Optional[str] = None, ldc: Optional[str] = None, load: Optional[
     ldc: The lay down config file path. Optional. If no value is passed then
     example default lay down config is used from:
     ~/primaite/config/example_config/lay_down/lay_down_config_3_doc_very_basic.yaml.
+
+    load: The directory of a previous session. Optional. If no value is passed, then the session
+    will use the default training config and laydown config. Inversely, if a training config and laydown config
+    is passed while a session directory is passed, PrimAITE will load the session and ignore the training config
+    and laydown config.
     """
     from primaite.config.lay_down_config import dos_very_basic_config_path
     from primaite.config.training_config import main_training_config_path