Update app.py

app.py

@@ -0,0 +1,27 @@
+import streamlit as st
+
+def calculator():
+    st.title("Simple Calculator")
+
+    num1 = st.number_input("Enter first number", value=0.0, format="%.2f")
+    num2 = st.number_input("Enter second number", value=0.0, format="%.2f")
+
+    operation = st.selectbox("Choose an operation", ["Addition", "Subtraction", "Multiplication", "Division"])
+
+    if st.button("Calculate"):
+        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."
+
+        st.success(f"Result: {result}")
+
+if __name__ == "__main__":
+    calculator()