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import streamlit as st
import math

st.set_page_config(page_title="Advanced Calculator", page_icon="🧮")

st.title("🧮 Advanced Calculator")

# Menu
operation = st.selectbox(
    "Choose Operation",
    [
        "Addition",
        "Subtraction",
        "Multiplication",
        "Division",
        "Power",
        "Square Root",
        "Log (base 10)"
    ]
)

# Input fields
if operation in ["Addition", "Subtraction", "Multiplication", "Division", "Power"]:
    num1 = st.number_input("Enter first number")
    num2 = st.number_input("Enter second number")

elif operation in ["Square Root", "Log (base 10)"]:
    num1 = st.number_input("Enter number")

# Button
if st.button("Calculate"):
    try:
        if operation == "Addition":
            result = num1 + num2

        elif operation == "Subtraction":
            result = num1 - num2

        elif operation == "Multiplication":
            result = num1 * num2

        elif operation == "Division":
            if num2 != 0:
                result = num1 / num2
            else:
                result = "Error! Division by zero"

        elif operation == "Power":
            result = num1 ** num2

        elif operation == "Square Root":
            if num1 >= 0:
                result = math.sqrt(num1)
            else:
                result = "Error! Negative number"

        elif operation == "Log (base 10)":
            if num1 > 0:
                result = math.log10(num1)
            else:
                result = "Error! Log undefined"

        st.success(f"Result: {result}")

    except:
        st.error("Something went wrong!")