setup season 2425 with first part of the questions

src/operators.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+# Copyright 2024, School of Engineering and Architecture of Fribourg
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+__author__ = 'Michael Mader'
+__date__ = "2023-03-12"
+__version__ = "0.2"
+__email__ = "michael.maeder@hefr.ch"
+
+
+# file containing the operations for the calculator
+
+# addition: returns x+y 
+def addition(x, y):
+    return x+y
+
+
+# subtraction: returns x-y 
+def subtraction(x, y):
+    return x-y
+
+
+# multiplication: returns x*y 
+def multiplication(x, y):
+    return x*y
+
+
+# division: returns x/y
+#   returns None if the divisor is zero
+#   the result might be of float type
+def division(x, y):
+    if y==0:
+        return None
+    return x/y