sidebar order

langchain-streamlit-demo/app.py

@@ -35,9 +35,25 @@ st.sidebar.markdown(
 openai_api_key = st.sidebar.text_input("OpenAI API Key", type="password")
 st.session_state.openai_api_key = openai_api_key
 
-langsmith_api_key = st.sidebar.text_input("LangSmith API Key", type="password")
+langsmith_api_key = st.sidebar.text_input(
+ "LangSmith API Key (optional)",
+ type="password",
+)
 st.session_state.langsmith_api_key = langsmith_api_key
+if st.session_state.langsmith_api_key.startswith("ls__"):
+ langsmith_project = st.sidebar.text_input(
+ "LangSmith Project Name",
+ value="langchain-streamlit-demo",
+ )
+ os.environ["LANGCHAIN_ENDPOINT"] = "https://api.smith.langchain.com"
+ os.environ["LANGCHAIN_API_KEY"] = st.session_state.langsmith_api_key
+ os.environ["LANGCHAIN_TRACING_V2"] = "true"
+ os.environ["LANGCHAIN_PROJECT"] = langsmith_project
 
+ client = get_langsmith_client()
+else:
+ langsmith_project = None
+ client = None
 
 if st.session_state.openai_api_key.startswith("sk-"):
  system_prompt = (
@@ -63,21 +79,6 @@ if st.session_state.openai_api_key.startswith("sk-"):
 
  chain = get_llm_chain(memory, system_prompt, temperature)
 
- if st.session_state.langsmith_api_key.startswith("ls__"):
- langsmith_project = st.sidebar.text_input(
- "LangSmith Project Name",
- value="langchain-streamlit-demo",
- )
- os.environ["LANGCHAIN_ENDPOINT"] = "https://api.smith.langchain.com"
- os.environ["LANGCHAIN_API_KEY"] = st.session_state.langsmith_api_key
- os.environ["LANGCHAIN_TRACING_V2"] = "true"
- os.environ["LANGCHAIN_PROJECT"] = langsmith_project
-
- client = get_langsmith_client()
- else:
- langsmith_project = None
- client = None
-
  run_collector = RunCollectorCallbackHandler()
 
  if st.sidebar.button("Clear message history"):