title: Python class: Employee management system
body: <p>This exercise assumes that you have created the Employee class for Programming Exercise 4.
  Create a program that stores Employee objects in a dictionary. Use the employee ID number
  as the key. The program should present a menu that lets the user perform the following actions:
  • Look up an employee in the dictionary
  • Add a new employee to the dictionary
  • Change an existing employee’s name, department, and job title in the dictionary
  • Delete an employee from the dictionary
  • Quit the program
  When the program ends, it should pickle the dictionary and save it to a file. Each time the
  program starts, it should try to load the pickled dictionary from the file. If the file does not
  exist, the program should start with an empty dictionary.</p>
  
  <p>Okay so here is my solution:-</p>
  
  <pre><code>class Employee:
      'ID, number, department, job title'
  
      def __init__(self,ID,number,department,job_title):
          self.ID = ID
          self.number = number
          self.department = department
          self.job_title = job_title
  
      # Mutators
  
      def set_ID(self,ID):
          self.ID = ID
  
      def set_number(self,number):
          self.number = number
  
      def set_department(self,department):
          self.department = department
  
      def job_title(self,job_title):
          self.job_title = job_title
  
      #Accessor Methods
  
      def get_ID(self):
          return self.ID
  
      def get_number(self):
          return self.number
  
      def get_department(self):
          return self.department
  
      def get_job_title(self):
          return self.job_title
  
      def get_data(self):
          print self.ID, self.number,self.department,self.job_title
  </code></pre>
  
  <p>I saved the above as Employee.py in a folder. Then i started a new file and saved that as Employee Management System.py 
  Here is the code in that file</p>
  
  <pre><code>import Employee
  import pickle
  
  filename = 'contacts.dat'
  input_file = open(filename,'rb')
  unpickle_input_file = pickle.load(input_file)
  def test_system():
  
      user = input('Press 1 to look up employee,\nPress 2 to add employee'
                   '\n3Press 3 to change an existing employee name, department and job title'
                   '\n4 Delete an employee from the dictionary'
                   '\n5 Quit the program'
                   '\nMake your choice ')
  
      if user == 2:
          ID = raw_input('Enter the name ')
          number = input('Enter the number')
          deparment = raw_input('Enter the department ')
          job_title = raw_input('Enter the job title ')
  
          entry = module from Employee??.class name(id,number,department,job_title)??
          empty_dictionary = {}
          empty_dictionary[number] = entry
  
  
  input_file.close()
  </code></pre>
  
  <p>My first problem is that i am trying to use the created attribue in Employee.py . Specifically the <strong>init</strong> and add entry to it. I know the above code is not in the most logical forum but i am trying to first see if i can add data then pickle the file first. Everything else would be easy to figure out later if i can under how to do those two things.</p>
  
  <p>It kind of reminds me of</p>
  
  <pre><code>import math
  x = math.pi(3.14)
  x = module.function(3.14)
  </code></pre>
  
  <p>But i can't just seem to made the connection between the two examples.
  Thank you</p>