Python - OOP(Object-Oriented Programming) Classes and Instances
** OOP Tutorial 1: Classes and Instances
==========================================
# Python Object-Oriented Programming
class Employee:
pass
emp_1 = Employee()
emp_2 = Employee()
print(emp_1)
print(emp_2)
---------------------------------
__main__.Employee object at 0x022CFF88
__main__.Employee object at 0x022CFFB8
---------------------------------
==========================================
# Python Object-Oriented Programming
class Employee:
pass
emp_1 = Employee()
emp_2 = Employee()
print(emp_1)
print(emp_2)
emp_1.first = 'HAN'
emp_1.last = 'SeokDu'
emp_1.email = 'HAN@company.com'
emp_1.pay = 50000
emp_2.first = 'KIM'
emp_2.last = 'Young'
emp_2.email = 'KIM@company.com'
emp_2.pay = 30000
print(emp_1.email)
print(emp_2.email)
---------------------------------
__main__.Employee object at 0x01D6FF88
__main__.Employee object at 0x01D6FFB8
HAN@company.com
KIM@company.com
---------------------------------
==========================================
# Python Object-Oriented Programming
class Employee:
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
print(emp_1.email)
print(emp_2.email)
---------------------------------
HAN.SeokDu@company.com
KIM.Young@company.com
---------------------------------
==========================================
# Python Object-Oriented Programming
class Employee:
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
print(emp_1.email)
print(emp_2.email)
print('{} {}'.format(emp_1.first, emp_1.last))
---------------------------------
HAN.SeokDu@company.com
KIM.Young@company.com
HAN SeokDu
---------------------------------
==========================================
# Python Object-Oriented Programming
class Employee:
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
def fullname(self):
return '{} {}'.format(self.first, self.last)
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
print(emp_1.email)
print(emp_2.email)
print(emp_1.fullname())
---------------------------------
HAN.SeokDu@company.com
KIM.Young@company.com
HAN SeokDu
---------------------------------
==========================================
class Employee:
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
def fullname(self):
return '{} {}'.format(self.first, self.last)
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
print(emp_2.fullname())
---------------------------------
KIM Young
---------------------------------
==========================================
class Employee:
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
def fullname():
return '{} {}'.format(self.first, self.last)
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
print(emp_2.fullname())
---------------------------------
print(emp_2.fullname())
TypeError: fullname() takes 0 positional arguments but 1 was given
---------------------------------
==========================================
class Employee:
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
def fullname(self):
return '{} {}'.format(self.first, self.last)
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
emp_1.fullname()
print(Employee.fullname(emp_1))
---------------------------------
HAN SeokDu
---------------------------------