From c09fe1dfdf10a940afb46050dc6ab4464ef854b8 Mon Sep 17 00:00:00 2001
From: Harrison Chase <hw.chase.17@gmail.com>
Date: Thu, 24 Nov 2022 09:46:29 -0800
Subject: [PATCH] stash

---
 langchain/prompts/base.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/langchain/prompts/base.py b/langchain/prompts/base.py
index 44cdad9ff08..c8d9c0f9bb1 100644
--- a/langchain/prompts/base.py
+++ b/langchain/prompts/base.py
@@ -26,6 +26,20 @@ def check_valid_template(
     except KeyError:
         raise ValueError("Invalid prompt schema.")
 
+class OutputParser(ABC):
+    """Class to parse the output of an LLM call."""
+
+    @abstractmethod
+    def parse(self, text: str) -> Union[str, List[str], Dict[str, str]]:
+        """Parse the output of an LLM call."""
+
+
+class DefaultParser(OutputParser):
+    """Just return the text."""
+
+    def parse(self, text: str) -> Union[str, List[str], Dict[str, str]]:
+        """Parse the output of an LLM call."""
+        return text
 
 class BasePromptTemplate(ABC):
     """Base prompt should expose the format method, returning a prompt."""