Homework for lesson #4, python course spring 2020

1 create a project

The idea is to create multiple files project somehow reflecting what's going on in the reality

2 Create the hierarchy of classes

With given Student - Lecturer - Worker relationship there were 2 options:

• create superclass Person

3. make everything properly working

Some HW description was not 100% correct, like it is always in Tech Requirements. Make everything working and usable.

1: תכתבו מחלקות "Employee" "Lecturer" "Student"

Create classes structure, including methods, getters and setters for the given:

תוסיפו פרמטרים הנדרשים, רצוי שכמה מהם יהיו "פרמטרי פנים" – ללא אפשרות לשינוי ללא פונקציה תכתבו מטודות – setters – פונקציות לקביעת ערך הפרמטרים תכתבו פונקציות לקבלת הפרמטרים

WORKER	STUDENT	Lecturer
First Name	First Name	First Name
Last name	Last name	Last name
Id	Id	Id
Address	Address	Address
Profession	Study year	Study year
Base salary	Courses	Courses they teach

• | - | Rate per hour

Rewrite the Person as a base class

You might use this code as a base ALSO Rewrite the Person class so that a person’s age is calculated for the first time when a new person instance is created, and recalculated (when it is requested) if the day has changed since the last time that it was calculated.

שכתוב מח' Person כך שגילו של האדם תחושב בפעם הראשונה כאשר אובייקט של אדם חדש נוצר, ויחושב מחדש (כשזה מתבקש) ואם היום לא השתנה מאז הפעם האחרונה שהוא היה מחושב.

import datetime # we will use this for date objects

class Person:

    def __init__(self, name, surname, birthdate, address, telephone, email):
        self.name = name
        self.surname = surname
        self.birthdate = birthdate

        self.address = address
        self.telephone = telephone
        self.email = email

    def age(self):
        today = datetime.date.today()
        age = today.year - self.birthdate.year

        if today < datetime.date(today.year, self.birthdate.month, self.birthdate.day):
            age -= 1

        return age

main.py MUST contain

person = Person(
    "שירלי",
    "משולם",
    datetime.date(1992, 3, 12), # year, month, day
    "רח' שבי בשקט 13",
    "012 12345678",
    "sh.meshulam@example.com"
)

print(person.name)
print(person.email)
print(person.age())

תמלאו את התוכן של המחלקות, שהתוכנית תכתוב:

Fill up/rewrite the code:

class Person:
    def __init__(self, name: str, surname: str, birth_date: date, address: str, person_id: int, ......
				):
		pass

	@property
    def address(self):
        return self.__address

    @address.setter
    def address(self, value):
        self.__address = value

    pass

class Student:
    pass

class Lecturer:
    pass

class Worker:
    pass
    	

main.py better contain

student1 = Student("Muhammad","Ben-Ami","15","Some street 13 at Some City",('Python','Java'),2020)
student2 = Student("Iris","York","16","Some street 14 at Some City",('Python','C#'),2020)
student1.takes_courses()
student2.takes_courses()

lecturer1 = Lecturer('Whoever','Ben-Zakkai','19','Some addr',('Python','Advanced Algorithms'),2020)

if lecturer1.teaches_something(student1) :
    print(f'{lecturer1.name()} {lecturer1.surname()} teaches {student1.takes_courses_from(lecturer1)}’)

print(f’ {student1.name()} and {student2.name()} study {lecturer1.taught_students(student1, student2)} from {lecturer1.name()}’)

RESULTING OUTPUT MUST CONTAIN

--------
name: Muhammad Ben-Ami; address: Some street 13 at Some City;
 in year 2020 takes courses : Python, Java
--------
name: Iris York; address: Some street 14 at Some City;
 in year 2020 takes courses : Python, C#
--------
Lecturer Whoever Ben-Zakkai
 in year 2020 teaches: 
['Python'] to name: Muhammad Ben-Ami; address: Some street 13 at Some City;
['Python'] to name: Iris York; address: Some street 14 at Some City;
--------
Muhammad Ben-Ami 
Takes:
 - ['Python'] from Whoever Ben-Zakkai