Update app.py

app.py

@@ -0,0 +1,33 @@
+import streamlit as st
+
+def main():
+    st.title("Simple Calculator")
+    
+    # Input fields
+    num1 = st.number_input("Enter first number", value=0.0, format="%f")
+    num2 = st.number_input("Enter second number", value=0.0, format="%f")
+    
+    # Operation selection
+    operation = st.selectbox("Choose operation", ["Add", "Subtract", "Multiply", "Divide"])
+    
+    result = None
+    
+    # Perform calculation
+    if st.button("Calculate"):
+        if operation == "Add":
+            result = num1 + num2
+        elif operation == "Subtract":
+            result = num1 - num2
+        elif operation == "Multiply":
+            result = num1 * num2
+        elif operation == "Divide":
+            if num2 != 0:
+                result = num1 / num2
+            else:
+                st.error("Division by zero is not allowed")
+                result = "Undefined"
+        
+        st.success(f"Result: {result}")
+
+if __name__ == "__main__":
+    main()