Merge branch 'development' into falcon

.gitignore

@@ -82,4 +82,7 @@ dmypy.json
 .DS_Store
 
 # vs code
-.vscode
+.vscode
+
+# venv files
+env*

kendra_retriever_samples/app.py

@@ -7,7 +7,7 @@
 import kendra_chat_flan_xxl as flanxxl
 import kendra_chat_open_ai as openai
 import kendra_chat_falcon_40b as falcon40b
-
+import kendra_chat_llama_2 as llama2
 
 USER_ICON = "images/user-icon.png"
 AI_ICON = "images/ai-icon.png"
@@ -18,6 +18,7 @@
     'flanxl': 'Flan XL',
     'flanxxl': 'Flan XXL',
     'falcon40b': 'Falcon 40B'
+    'llama2' : 'Llama 2'
 }
 
 # Check if the user ID is already stored in the session state
@@ -47,6 +48,9 @@
         elif (sys.argv[1] == 'falcon40b'):
             st.session_state['llm_app'] = falcon40b
             st.session_state['llm_chain'] = falcon40b.build_chain()
+        elif (sys.argv[1] == 'llama2'):
+            st.session_state['llm_app'] = llama2
+            st.session_state['llm_chain'] = llama2.build_chain()
         else:
             raise Exception("Unsupported LLM: ", sys.argv[1])
     else: