Create app.py

app.py

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+import streamlit as st
+
+st.set_page_config(page_title="Simple Calculator", layout="centered")
+
+st.title("🧮 Simple Calculator")
+
+# Input numbers
+num1 = st.number_input("Enter first number", value=0.0)
+num2 = st.number_input("Enter second number", value=0.0)
+
+# Operation selection
+operation = st.selectbox(
+    "Select operation",
+    ("Addition", "Subtraction", "Multiplication", "Division")
+)
+
+# Calculate button
+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 = "❌ Cannot divide by zero"
+
+    st.success(f"Result: {result}")