Added common starting code for tutorials

Starting_Code/calc.py

+
+def add(x, y):
+    """Add Function"""
+    return x + y
+
+
+def subtract(x, y):
+    """Subtract Function"""
+    return x - y
+
+
+def multiply(x, y):
+    """Multiply Function"""
+    return x * y
+
+
+def divide(x, y):
+    """Divide Function"""
+    return x / y

Starting_Code/employee.py

+
+class Employee:
+    """A sample Employee class"""
+
+    num_of_emps = 0
+    raise_amt = 1.04
+
+    def __init__(self, first, last, pay):
+        self.first = first
+        self.last = last
+        self.pay = pay
+
+        Employee.num_of_emps += 1
+
+    @property
+    def email(self):
+        return '{}.{}@email.com'.format(self.first, self.last)
+
+    @property
+    def fullname(self):
+        return '{} {}'.format(self.first, self.last)
+
+    def apply_raise(self):
+        self.pay = int(self.pay * self.raise_amt)
+
+    def __repr__(self):
+        return "Employee('{}', '{}', {})".format(self.first, self.last, self.pay)
+
+
+class Manager(Employee):
+    """A sample Manager class"""
+
+    def __init__(self, first, last, pay, employees=None):
+        super().__init__(first, last, pay)
+        self.employees = employees if employees else []
+
+    def add_emp(self, emp):
+        if emp not in self.employees:
+            self.employees.append(emp)
+
+    def remove_emp(self, emp):
+        if emp in self.employees:
+            self.employees.remove(emp)
+
+    def __repr__(self):
+        return "Manager('{}', '{}', {}, {})".format(self.first, self.last, self.pay, self.employees)