Updated the security model to support multiple passwords for different users, so I can grant it to someone and revoke if needed.

src/st_helpers.py

@@ -1,5 +1,24 @@
 import streamlit as st
 
+
+def login(pw: str) -> bool:
+    """
+    Convenience wrapper for login functionality.  Has side effect of storing the logged in
+    user name in the session state
+    :param pw: Password to attempt login
+    :return: True/False if logged in
+    """
+    pw_users = st.secrets['app_password'].split(';')
+    for pu in pw_users:
+        split_point=pu.find('(')
+        pu_password = pu[0:split_point]
+        if pu_password == pw:
+            pu_user = pu[split_point + 1: -1]
+            st.session_state['username'] = pu_user
+            return True
+    return False
+
+
 def st_setup(page_title: str, layout: str = 'wide'):
     """
     Sets up standard outline (wide layout), checks for logged in status and then
@@ -9,6 +28,11 @@ def st_setup(page_title: str, layout: str = 'wide'):
     :return: bool - logged in status
     """
     st.set_page_config(page_title=page_title, layout=layout)
+
+    username='username'
+    if username in st.session_state:
+        st.markdown(f'<div style="float: right;">Logged in as <b>{st.session_state[username]}</b></span>', unsafe_allow_html=True)
+
     with st.sidebar:
         st.image('img/uob-logo.png', width=200)
 
@@ -25,7 +49,7 @@ def st_setup(page_title: str, layout: str = 'wide'):
             st.write('### Log in')
             pw = st.text_input(type='password', label='Password')
             if st.button('Log in'):
-                if pw == st.secrets['app_password']:
+                if login(pw):
                     st.session_state[logged_in]=True
                     st.rerun()
                 else: