Added missing default=None to LLM.system_prompt (run-llama#9504)

* Adding default=None to system_prompt to fix type errors * Added CHANGELOG entry
ShorthillsAI · Dec 14, 2023 · 9d4528d · 9d4528d
1 parent ef5db97
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # ChangeLog
 
+## Unreleased
+
+### Bug Fixes / Nits
+
+- Fixed missing `default=None` for `LLM.system_prompt` (#9504)
+
 ## [0.9.15] - 2023-12-13
 
 ### New Features

diff --git a/llama_index/llms/llm.py b/llama_index/llms/llm.py
@@ -86,7 +86,9 @@ async def gen() -> TokenAsyncGen:
 
 
 class LLM(BaseLLM):
-    system_prompt: Optional[str] = Field(description="System prompt for LLM calls.")
+    system_prompt: Optional[str] = Field(
+        default=None, description="System prompt for LLM calls."
+    )
     messages_to_prompt: MessagesToPromptType = Field(
         description="Function to convert a list of messages to an LLM prompt.",
         default=generic_messages_to_prompt,