Update app.py

app.py

@@ -0,0 +1,28 @@
+import streamlit as st
+
+from langchain_huggingface import HuggingFaceEndpoint
+
+api_key = os.environ.get("HUGGINGFACEHUB_API_TOKEN")
+
+def load_answer(question):
+    llm = HuggingFaceEndpoint(
+        repo_id = "mistralai/Mistral-7B-Instruct-v0.3"
+    )
+    answer = llm.invoke(question)
+    return answer
+
+st.set_page_config(page_title="LangChain Demo", page_icon=":robot:")
+st.header("LangChain Demo")
+
+def get_text():
+    input_text = st.text_input("You: ", key="input")
+    return input_text
+
+user_input = get_text()
+if user_input != "":
+    response = load_answer(user_input)
+
+submit = st.button('Generate')
+if submit:
+    st.subheader("Answer:")
+    st.write(response)