Create calculator/operations.py

calculator/operations.py

@@ -0,0 +1,20 @@
+def perform_calculation(numbers, operation):
+    if operation == "add":
+        return sum(numbers)
+    elif operation == "subtract":
+        return numbers[0] - sum(numbers[1:])
+    elif operation == "multiply":
+        result = 1
+        for num in numbers:
+            result *= num
+        return result
+    elif operation == "divide":
+        try:
+            result = numbers[0]
+            for num in numbers[1:]:
+                result /= num
+            return result
+        except ZeroDivisionError:
+            return "Error: Division by zero!"
+    else:
+        return "Unsupported operation!"