app.py

import streamlit as st
import time

# Function to update the progress bar color based on the progress
def update_progress_bar_color(progress):
    if progress < 0.3:
        return '#800080'  # Purple
    elif progress < 0.7:
        return '#00ffff'  # Cyan
    else:
        return '#00ff00'  # Lime Green

# Function to demonstrate a for loop with colorful output
def demonstrate_for_loop(n):
    progress_bar = st.progress(0)  # Initialize the progress bar
    st.markdown('<h3 style="color:#1E90FF;">For Loop Executing...</h3>', unsafe_allow_html=True)

    result = ""
    for i in range(1, n + 1):
        color = "teal" if i % 2 == 0 else "orange"
        result += f'<span style="color:{color}; font-size:24px; font-weight:bold;">{i} </span>'
        
        # Update the progress
        progress = i / n
        progress_bar.progress(progress)

        # Display results in real-time
        st.markdown(f'<div style="background-color:#fffacd; padding:20px; border-radius:10px; box-shadow: 0px 4px 12px rgba(0,0,0,0.1);">'
                     f'<strong>For Loop result:</strong> {result}</div>', unsafe_allow_html=True)

        time.sleep(0.5)  # Simulate execution time

# Function to demonstrate a while loop with colorful output
def demonstrate_while_loop(n):
    progress_bar = st.progress(0)  # Initialize the progress bar
    st.markdown('<h3 style="color:#1E90FF;">While Loop Executing...</h3>', unsafe_allow_html=True)

    result = ""
    i = 1
    while i <= n:
        color = "teal" if i % 2 == 0 else "orange"
        result += f'<span style="color:{color}; font-size:24px; font-weight:bold;">{i} </span>'
        
        # Update the progress
        progress = i / n
        progress_bar.progress(progress)

        # Display results in real-time
        st.markdown(f'<div style="background-color:#fffacd; padding:20px; border-radius:10px; box-shadow: 0px 4px 12px rgba(0,0,0,0.1);">'
                     f'<strong>While Loop result:</strong> {result}</div>', unsafe_allow_html=True)

        time.sleep(0.5)  # Simulate execution time
        i += 1

# Streamlit app layout
st.title("Loop Demonstrator App")
st.markdown("This app demonstrates a for loop and a while loop with colorful outputs.")

# User inputs
n = st.number_input("Enter a number:", min_value=1, value=1)
loop_type = st.selectbox("Select Loop Type:", ["For Loop", "While Loop"])

# Button to trigger the loop demonstration
if st.button('Run Loop'):
    if loop_type == 'For Loop':
        demonstrate_for_loop(n)
    else:
        demonstrate_while_loop(n)