Create app.py

app.py

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+import streamlit as st
+import math
+
+st.set_page_config(page_title="Advanced Calculator", layout="centered")
+
+st.title("🧮 Advanced Calculator")
+
+st.write("Supports: +, -, *, /, sqrt, power, log, ln")
+
+# Select operation
+operation = st.selectbox(
+    "Choose Operation",
+    ["Addition (+)", "Subtraction (-)", "Multiplication (*)", "Division (/)",
+     "Square Root (sqrt)", "Power (x^y)", "Log base 10 (log)", "Natural Log (ln)"]
+)
+
+# Input fields
+if operation in ["Addition (+)", "Subtraction (-)", "Multiplication (*)", "Division (/)"]:
+    num1 = st.number_input("Enter first number")
+    num2 = st.number_input("Enter second number")
+
+elif operation == "Power (x^y)":
+    num1 = st.number_input("Enter base")
+    num2 = st.number_input("Enter exponent")
+
+else:
+    num1 = st.number_input("Enter number")
+
+# Calculate 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:
+                st.error("Division by zero!")
+            else:
+                result = num1 / num2
+                st.success(f"Result: {result}")
+
+        elif operation == "Square Root (sqrt)":
+            if num1 < 0:
+                st.error("Cannot take square root of negative number!")
+            else:
+                result = math.sqrt(num1)
+                st.success(f"Result: {result}")
+
+        elif operation == "Power (x^y)":
+            result = math.pow(num1, num2)
+            st.success(f"Result: {result}")
+
+        elif operation == "Log base 10 (log)":
+            if num1 <= 0:
+                st.error("Log undefined for non-positive numbers!")
+            else:
+                result = math.log10(num1)
+                st.success(f"Result: {result}")
+
+        elif operation == "Natural Log (ln)":
+            if num1 <= 0:
+                st.error("Log undefined for non-positive numbers!")
+            else:
+                result = math.log(num1)
+                st.success(f"Result: {result}")
+
+        # Show result for basic operations
+        if operation in ["Addition (+)", "Subtraction (-)", "Multiplication (*)"]:
+            st.success(f"Result: {result}")
+
+    except Exception as e:
+        st.error(f"Error: {e}")