Code Editor for app.py

import streamlit as st

st.title("CLI Echo")
st.write("Type something and I'll echo it back!")

# Initialize history if it doesn't exist
if "history" not in st.session_state:
    st.session_state.history = []

# Get user input
user_input = st.text_input("$ ", key="command_input")

# When user submits something
if user_input:
    # Add to history
    st.session_state.history.append(f"$ {user_input}")
    st.session_state.history.append(user_input)
    
    # Clear the input
    st.session_state.command_input = ""

# Display history
for line in st.session_state.history:
    st.text(line)