Code Editor for app.py

import streamlit as st

st.title("✨ Beautiful Touch Calculator ✨")

# Initialize memory
if "memory" not in st.session_state:
    st.session_state.memory = "0"
if "should_clear" not in st.session_state:
    st.session_state.should_clear = False

# Calculator display
display = st.text_input("", value=st.session_state.memory, key="display", 
                       label_visibility="collapsed")

# Custom CSS for button styling
st.markdown("""
    <style>
    div.stButton > button {
        width: 100%;
        height: 50px;
        font-size: 20px;
        font-weight: bold;
        margin: 2px;
        border-radius: 10px;
    }
    div.stButton > button:hover {
        background-color: #f0f0f0;
        border-color: #808080;
    }
    </style>
    """, unsafe_allow_html=True)

def update_display(value):
    if st.session_state.should_clear:
        st.session_state.memory = str(value)
        st.session_state.should_clear = False
    else:
        if st.session_state.memory == "0":
            st.session_state.memory = str(value)
        else:
            st.session_state.memory += str(value)

def clear():
    st.session_state.memory = "0"
    st.session_state.should_clear = False

def calculate():
    try:
        st.session_state.memory = str(eval(st.session_state.memory))
        st.session_state.should_clear = True
    except:
        st.session_state.memory = "Error"
        st.session_state.should_clear = True

# Calculator buttons
col1, col2, col3, col4 = st.columns(4)

with col1:
    if st.button("7"): update_display(7)
with col2:
    if st.button("8"): update_display(8)
with col3:
    if st.button("9"): update_display(9)
with col4:
    if st.button("÷"): update_display("/")

col1, col2, col3, col4 = st.columns(4)

with col1:
    if st.button("4"): update_display(4)
with col2:
    if st.button("5"): update_display(5)
with col3:
    if st.button("6"): update_display(6)
with col4:
    if st.button("×"): update_display("*")

col1, col2, col3, col4 = st.columns(4)

with col1:
    if st.button("1"): update_display(1)
with col2:
    if st.button("2"): update_display(2)
with col3:
    if st.button("3"): update_display(3)
with col4:
    if st.button("-"): update_display("-")

col1, col2, col3, col4 = st.columns(4)

with col1:
    if st.button("0"): update_display(0)
with col2:
    if st.button("."): update_display(".")
with col3:
    if st.button("="): calculate()
with col4:
    if st.button("+"): update_display("+")

if st.button("Clear"): clear()

# Footer
st.markdown("---")
st.markdown("Made with ❤️ using Streamlit")