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POPython working with classes
 

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    <p>I am working with classes in Python 3 and I am having a hard time with them. I have two programs here (One is being imported into the other) The idea is that you are making a list of employees and you have three classes of employee Hourly, Salary, and Volunteer.</p> <p>I seem to be having an issue with my show_pay in each class. I also know that in my Salary class I am attempting to divide a string by an integer but the way I have the code written I'm not quite sure how to get around it. My Hourly class doesn't seem to print to the list.</p> <p>Thank you in advance. I'm really confused with this and I'm trying to get through this project.</p> <p>First Project (Employee)</p> <pre><code> #set global constant SHIFT_2 = 0.05 SHIFT_3 = 0.10 #person class class Person: #initialize name, ID number, city def __init__(self, name, ID, city): self.__ID = ID self.__name = name self.__city = city #display employee name def show_person(self): print('Name:', self.__name) print('ID:', self.__ID) print('City:', self.__city) #display salary def show_pay(self): print('I make lots of money') #return formatting def __str__(self): name_string = '(My name is ' + self.__name +')' return name_string # Hourly employee class class Hourly(Person): #initialize method calls superclass def __init__(self, name, ID, city, base_pay, shift): Person.__init__(self, name, ID, city) self.__base_pay = base_pay self.__shift = shift #show_pay overrides the superclass and displays hourly pay rates def show_pay(self): if self.__shift == 1: print('My salary is ', self.__base_pay) elif self.__shift == 2: print('My salary is ', (self.__base_pay * SHIFT_2) + self.__base_pay) elif self.__shift == 3: print('My salary is ', (self.__base_pay * SHIFT_3) + self.__base_pay) #salary employee class class Salary(Person): #intialize method calls superclass def __init__(self, name, ID, city, ann_salary): Person.__init__(self, name, ID, city) self.__salary = ann_salary #show pay overrides superclass and displays salary pay rates def show_pay(self): print('I make ', self.__salary) print('which is ', self.__salary // 26, 'every two weeks.') #volunteer employee class class Volunteer(Person): def __init__(self, name, ID, city): Person.__init__(self, name, ID, city) def show_pay(self): print('I am a volunteer so I am not paid.') </code></pre> <p>This is the main program</p> <pre><code> import employee def main(): #create list employees = make_list() #display list print('Here are the employees.') print('-----------------------') display_list(employees) def make_list(): #create list employee_list = [] #get number of hourly employees number_of_hourly = int(input('\nHow many hourly will be entered? ')) for hourly in range(number_of_hourly): #get input name, ID, city = get_input() base_pay = input('Enter employee base pay: ') shift = input('Enter employee shift 1,2, or 3: ') #create object Hourly = employee.Hourly(name, ID, city, base_pay, shift) #add object to list employee_list.append(Hourly) #get number of salary employees number_of_salary = int(input('\nHow many salary will be entered? ')) for salary in range(number_of_salary): #get input name, ID, city = get_input() ann_salary = input('Enter employee annual salary: ') #create object salary = employee.Salary(name, ID, city, ann_salary) #add object to list employee_list.append(salary) #get volunteers number_of_volunteers = int(input('\nHow many other volunteers will be entered? ')) for volunteers in range(number_of_volunteers): #get info name, ID, city = get_input() #create object volunteer = employee.Person(name, ID, city) #add object to list employee_list.append(volunteer) #invalid object employee_list.append('\nThis is invalid') #return employee_list return employee_list def get_input(): #input name name = input("Employee's name: ") #validate while name == '': print('\n Name is required. Try again.') name = input("Employee's name: ") ID_valid = False ID = input("Employee's ID: ") while ID_valid == False: try: ID = float(ID) if ID &gt; 0: ID_valid = True else: print("\nID must be &gt; 0. Try again.") ID = input("Employee's age: ") except ValueError: print("\nID must be numeric. Try again.") ID = input("Employee's ID: ") #get city city = input("Enter employee's city of residence: ") #return values return name, ID, city def display_list(human_list): #create for loop for isinstance for human in human_list: #create isinstance if isinstance(human, employee.Person): print(human) human.show_person() human.show_pay() print else: print('Invalid employee object') #call main function main() </code></pre>
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    1. COWhat exactly is your question? Also, you don't need to prepend all class variables with `__`. It makes readability feasible.
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    2. COI guess with classes the show_pay should change to whatever it is under that particular class (Hourly, Salary, or Volunteer) but for some reason it's not working. Sorry about the __. I am new to this and thats what my book says to do so I'm not sure of any other way.
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    3. COActually - if teh above coding is not working, the `__` prefixed names have to do with it. You probably saw somewhere that "this is how one does private properties in Python" - that would be incorrect, strictly speaking. But it can make code like this malfunction rather easily. Just get rid of them.
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