Update app.py

app.py

@@ -1,32 +1,65 @@
 import streamlit as st
 
 def main():
-    st.title("Simple Calculator")
+    st.title("Enhanced Calculator")
 
-    # Input fields for numbers
+    # Input fields for three numbers
     num1 = st.number_input("Enter the first number", value=0.0)
     num2 = st.number_input("Enter the second number", value=0.0)
+    num3 = st.number_input("Enter the third number", value=0.0)
 
     # Dropdown for selecting the operator
-    operator = st.selectbox("Select an operation", ["+", "-", "*", "/"])
+    operations = [
+        "Addition", 
+        "Subtraction", 
+        "Multiplication", 
+        "Division", 
+        "Modulus", 
+        "Exponentiation", 
+        "Average"
+    ]
+    operator = st.selectbox("Select an operation", operations)
 
     if st.button("Calculate"):
         result = None
-        # Perform calculation based on the selected operator
-        if operator == "+":
-            result = num1 + num2
-        elif operator == "-":
-            result = num1 - num2
-        elif operator == "*":
-            result = num1 * num2
-        elif operator == "/":
-            if num2 == 0:
-                st.error("Error: Division by zero is not allowed.")
-            else:
-                result = num1 / num2
-
-        if result is not None:
-            st.success(f"Result: {result}")
+        
+        try:
+            if operator == "Addition":
+                result = num1 + num2 + num3
+
+            elif operator == "Subtraction":
+                result = num1 - num2 - num3
+
+            elif operator == "Multiplication":
+                result = num1 * num2 * num3
+
+            elif operator == "Division":
+                # Check for division by zero
+                if num2 == 0 or num3 == 0:
+                    st.error("Error: Division by zero is not allowed.")
+                else:
+                    result = num1 / num2 / num3
+
+            elif operator == "Modulus":
+                # Check for modulus by zero
+                if num2 == 0 or num3 == 0:
+                    st.error("Error: Modulus by zero is not allowed.")
+                else:
+                    result = (num1 % num2) % num3
+
+            elif operator == "Exponentiation":
+                # We'll calculate as (num1 ** num2) ** num3
+                result = (num1 ** num2) ** num3
+
+            elif operator == "Average":
+                result = (num1 + num2 + num3) / 3
+
+            # Display the result if it was computed
+            if result is not None:
+                st.success(f"Result: {result}")
+
+        except Exception as e:
+            st.error(f"An error occurred: {e}")
 
 if __name__ == '__main__':
     main()