Question

please make sure to write down all the coding and the output for it and to do all three steps

Student Name: 1. Write a class named Employee that holds the following data about an employee in attributes: name, ID number, department, and job title. (employee.py) 2. Create a UML diagram for Employee class. (word file) 3. Create a program that stores Employee objects in a dictionary. Use the employee ID number as the key. (employee_App.py) 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, depart, and job title in the dictionary Delete an employee from the dictionary Quit the program When program ends, it should pickle the dictionary and save it to a file (employees.dat). 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. O Focus

Answer 1

Solution:

I am using the below format to store the details into the employees.dat file

ID : Name : Department : JobTitle

Look at the code , comments and Output for better understanding.......................

Screenshots of the codes:

employee.py

-/QA/python/employee.py - Sublime Text (UNREGISTERED) File Edit Selection Find View Goto Tools Project Preferences Help 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 employee.py class Employee: def init (self,id, name, dep,job): self._empid=id self. name=namel self. department=dep self. jobTitle=job def getName(self): return self._name def getId(self): return self._empid def getDep(self): return self._department def getJob(self): return self._jobTitle def setName(self, name) : self._name=name def setDep(self, dep) : self._department=dep def setJob(self,job): self._jobTitle=job U Line 4, Column 24 Tab Size: 4 Python

employee_App.py

--/QA/python/employee_App.py. - Sublime Text (UNREGISTERED) Goto Tools Project Preferences Help File Edit Selection Find View employee_App.py 1 from employee import Employee 2 Details={} 3 #Check if there is a file employee.dat already exists 4 flag=0 5 try: 6 file=open('employees.dat','r') 7 except FileNotFoundError: 8 flag=1 9 #If exists load its values into the Dictionary Details 10 if flagr=0: 11 file=open('employees.dat', 'r') 12 for line in file: 13 temp=line.split(':') 14 id=temp[@] 15 name=temp[1] 16 dep=temp[2] 17 job=temp[3] 18 Details[id] =Employee(id, name, dep,job) 19 #Displaying the menu to the user 20 while True: 21 print("1) Look up an Employee") 22 print("2) Add a new Employee") 23 print("3) Modify Employee") 24 print("4) Delete an employee") 25 print("5) Quit") 26 choice=input("Enter choice: ") 27 if(choice=='1'): 28 id=input("Enter Employee Id: ") 29 if id in Details: 30 print("Employee Found") 31 else: 32 print("Employee Not Found") 33 elif choice=='2': 34 id=input("Enter Employee Id: ") 35 name=input("Enter Employee Name: ") 36 dep=input("Enter Employee Department: ") Line 45, Column 20 Tab Size: 4

--/QA/python/employee_App.py. - Sublime Text (UNREGISTERED) Goto Tools Project Preferences Help File Edit Selection Find View employee_App.py 36 dep=input("Enter Employee Department: ") 37 job=input("Enter Employee Job Title: ") 38 Details[id]=Employee(id, name, dep, job) 39 elif choice=='3': 40 id=input("Enter Employee Id: ") 41 print("1) Name") 42 print("2) Department") 43 print("3) Job Title") 44 ch=input("Enter choice to modify: ") 45 if ch=='1:| 46 name=input("Enter Name: ") 47 Details[id].setName (name) 48 elif ch=='2': 49 dep=input("Enter Department: ") 50 Details[id].setDep(dep) 51 elif ch=='3': 52 job=input("Enter Job Title: ") 53 Details[id].setJob(job) 54 else: 55 print("Invalid Choice") 56 elif choice=='4': 57 id=input("Enter Employee Id: ") 58 Details.pop(id) 59 print("Employee removed") 60 elif choice=='5': 61 break 62 else: 63 print("Invalid choice") 64 65 #Writing the data to the employees.dat 66 file=open('employees.dat', 'w') 67 for key in Details.keys(): 68 emp=Details[key] 69 emp_data=key+":"+emp.getName()+":"+emp.getDep()+":"+emp.getJob()+"\n" 70 file.write(emp_data) 71 Line 45, Column 20 Tab Size: 4

UML Diagram:

Employee - name : String - empid : String - department: String - jobTitle : String +getName() : String +getido : String +getDepo) : String +getJob() : String +setName(String): Void +setDep(String) : Void +setJob(String) : Void

Output:

gm@Tricia: -/QA/python File Edit View Search Terminal Help gm@Tricia :-/QA/python$ python employee_App.py 1) Look up an Employee 2) Add a new Employee 3) Modify Employee 4) Delete an employee 5) Quit Enter choice: 2 Enter Employee Id: E1001 Enter Employee Name: Alice Enter Employee Department: Dep1 Enter Employee Job Title: Professor 1) Look up an Employee 2) Add a new Employee 3) Modify Employee 4) Delete an employee 5) Quit Enter choice: 1 Enter Employee Id: E1001 Employee Found 1) Look up an Employee 2) Add a new Employee 3) Modify Employee 4) Delete an employee 5) Quit Enter choice: 3 Enter Employee Id: E1001 1) Name 2) Department 3) Job Title Enter choice to modify: 2 Enter Department: Electronics 1) Look up an Employee 2) Add a new Employee 3) Modify Employee 4) Delete an employee

Edit gm@Tricia: -/QA/python File View Search Terminal Help 5) Quit Enter choice: 3 Enter Employee Id: E1001 1) Name 2) Department 3) Job Title Enter choice to modify: 2 Enter Department: Electronics 1) Look up an Employee 2) Add a new Employee 3) Modify Employee 4) Delete an employee 5) Quit Enter choice: 2 Enter Employee Id: E1002 Enter Employee Name: Bob Enter Employee Department: Dep2 Enter Employee Job Title: Prof 1) Look up an Employee 2) Add a new Employee 3) Modify Employee 4) Delete an employee 5) Quit Enter choice: 4 Enter Employee Id: E1002 Employee removed 1) Look up an Employee 2) Add a new Employee 3) Modify Employee 4) Delete an employee 5) Quit Enter choice: 5 gm@Tricia:-/QA/python$ cat employees.dat E1001:Alice: Electronics:Professor gm@Tricia:-/QA/python$

Code to copy:

employee.py

class Employee:
        def __init__(self,id,name,dep,job):
                self._empid=id
                self._name=name
                self._department=dep
                self._jobTitle=job
        def getName(self):
                return self._name
        def getId(self):
                return self._empid
        def getDep(self):
                return self._department
        def getJob(self):
                return self._jobTitle
        def setName(self,name):
                self._name=name
        def setDep(self,dep):
                self._department=dep
        def setJob(self,job):
                self._jobTitle=job

employee_App.py

from employee import Employee
Details={}
#Check if there is a file employee.dat already exists
flag=0
try:
        file=open('employees.dat','r')
except FileNotFoundError:
        flag=1
#If exists load its values into the Dictionary Details
if flag==0:
        file=open('employees.dat','r')
        for line in file:
                temp=line.split(':')
                id=temp[0]
                name=temp[1]
                dep=temp[2]
                job=temp[3]
                Details[id]=Employee(id,name,dep,job)
#Displaying the menu to the user
while True:
        print("1) Look up an Employee")
        print("2) Add a new Employee")
        print("3) Modify Employee")
        print("4) Delete an employee")
        print("5) Quit")
        choice=input("Enter choice: ")
        if(choice=='1'):
                id=input("Enter Employee Id: ")
                if id in Details:
                        print("Employee Found")
                else:
                        print("Employee Not Found")
        elif choice=='2':
                id=input("Enter Employee Id: ")
                name=input("Enter Employee Name: ")
                dep=input("Enter Employee Department: ")
                job=input("Enter Employee Job Title: ")
                Details[id]=Employee(id,name,dep,job)
        elif choice=='3':
                id=input("Enter Employee Id: ")
                print("1) Name")
                print("2) Department")
                print("3) Job Title")
                ch=input("Enter choice to modify: ")
                if ch=='1':
                        name=input("Enter Name: ")
                        Details[id].setName(name)
                elif ch=='2':
                        dep=input("Enter Department: ")
                        Details[id].setDep(dep)
                elif ch=='3':
                        job=input("Enter Job Title: ")
                        Details[id].setJob(job)
                else:
                        print("Invalid Choice")
        elif choice=='4':
                id=input("Enter Employee Id: ")
                Details.pop(id)
                print("Employee removed")
        elif choice=='5':
                break
        else:
                print("Invalid choice")

#Writing the data to the employees.dat
file=open('employees.dat','w')
for key in Details.keys():
        emp=Details[key]
        emp_data=key+":"+emp.getName()+":"+emp.getDep()+":"+emp.getJob()+"\n"
        file.write(emp_data)

I hope this would help...............................:-))