pip install --upgrade streamlit

streamlit --version

# basic count down using status, collpase after count down

import streamlit as st
import time

st.title('Streamlit new function Status')

st.write('hello world')

with st.status("counting down", expanded=True) as status:
    for i in range(10, 0, -1):
        st.write(f"{i}...")
        time.sleep(1)
    status.update(label="Time is up", state="complete", expanded=False)

st.button('Rerun')

import streamlit as st
import random
import time

st.title("Simple chat")

# Initialize chat history
if "messages" not in st.session_state:
    st.session_state.messages = []

# Display chat messages from history on app rerun
for message in st.session_state.messages:
    with st.chat_message(message["role"]):
        st.markdown(message["content"])

# Accept user input
if prompt := st.chat_input("What is up?"):
    # Add user message to chat history
    st.session_state.messages.append({"role": "user", "content": prompt})
    # Display user message in chat message container
    with st.chat_message("user"):
        st.markdown(prompt)

    # Display assistant response in chat message container
    with st.chat_message("assistant"):
        message_placeholder = st.empty()
        full_response = ""
        assistant_response = random.choice(
            [
                "Hello there! How can I assist you today?",
                "Hi, human! Is there anything I can help you with?",
                "Do you need help?",
            ]
        )
        # this part is new 
        with st.status("Thinking...") as status:
            time.sleep(1)
            # Simulate stream of response with milliseconds delay
            for chunk in assistant_response.split():
                full_response += chunk + " "
                time.sleep(0.05)
                # Add a blinking cursor to simulate typing
                message_placeholder.markdown(full_response + "▌")
            message_placeholder.markdown(full_response)
            status.update(label="Done", state="complete", expanded=False)

    # Add assistant response to chat history
    st.session_state.messages.append({"role": "assistant", "content": full_response})