Python - OOP(Object-Oriented Programming) classmethods and staticmethods
** OOP(Object-Oriented Programming) classmethods and staticmethods
==========================================
# Python Object-Oriented Programming
class Employee:
num_of_emps = 0
raise_amt = 1.04
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
Employee.num_of_emps += 1
def fullname(self):
return '{} {}'.format(self.first, self.last)
def apply_raise(self):
self.pay = int(self.pay * self.raise_amt)
@classmethod
def set_raise_amt(cls, amount):
cls.raise_amt = amount
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
print(Employee.raise_amt)
print(emp_1.raise_amt)
print(emp_2.raise_amt)
---------------------------------
1.04
1.04
1.04
---------------------------------
==========================================
# Python Object-Oriented Programming
class Employee:
num_of_emps = 0
raise_amt = 1.04
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
Employee.num_of_emps += 1
def fullname(self):
return '{} {}'.format(self.first, self.last)
def apply_raise(self):
self.pay = int(self.pay * self.raise_amt)
@classmethod
def set_raise_amt(cls, amount):
cls.raise_amt = amount
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
Employee.set_raise_amt(1.05)
print(Employee.raise_amt)
print(emp_1.raise_amt)
print(emp_2.raise_amt)
---------------------------------
1.05
1.05
1.05
---------------------------------
==========================================
# Python Object-Oriented Programming
class Employee:
num_of_emps = 0
raise_amt = 1.04
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
Employee.num_of_emps += 1
def fullname(self):
return '{} {}'.format(self.first, self.last)
def apply_raise(self):
self.pay = int(self.pay * self.raise_amt)
@classmethod
def set_raise_amt(cls, amount):
cls.raise_amt = amount
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
emp_1.set_raise_amt(1.05)
print(Employee.raise_amt)
print(emp_1.raise_amt)
print(emp_2.raise_amt)
---------------------------------
1.05
1.05
1.05
---------------------------------
==========================================
# Python Object-Oriented Programming
class Employee:
num_of_emps = 0
raise_amt = 1.04
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
Employee.num_of_emps += 1
def fullname(self):
return '{} {}'.format(self.first, self.last)
def apply_raise(self):
self.pay = int(self.pay * self.raise_amt)
@classmethod
def set_raise_amt(cls, amount):
cls.raise_amt = amount
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
emp_str_1 = 'John-Doe-70000'
emp_str_2 = 'Steve-Smith-30000'
emp_str_3 = 'Jane-Doe-90000'
first, last, pay = emp_str_1.split('-')
new_emp_1 = Employee(first, last, pay)
print(new_emp_1.email)
print(new_emp_1.pay)
---------------------------------
John.Doe@company.com
70000
---------------------------------
==========================================
# Python Object-Oriented Programming
class Employee:
num_of_emps = 0
raise_amt = 1.04
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
Employee.num_of_emps += 1
def fullname(self):
return '{} {}'.format(self.first, self.last)
def apply_raise(self):
self.pay = int(self.pay * self.raise_amt)
@classmethod
def set_raise_amt(cls, amount):
cls.raise_amt = amount
@classmethod
def from_string(cls, emp_str):
first, last, pay = emp_str_1.split('-')
return cls(first, last, pay)
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
emp_str_1 = 'John-Doe-70000'
emp_str_2 = 'Steve-Smith-30000'
emp_str_3 = 'Jane-Doe-90000'
new_emp_1 = Employee.from_string(emp_str_1)
print(new_emp_1.email)
print(new_emp_1.pay)
---------------------------------
John.Doe@company.com
70000
---------------------------------
==========================================
# Python Object-Oriented Programming
class Employee:
num_of_emps = 0
raise_amt = 1.04
def __init__(self, first, last, pay):
self.first = first
self.last = last
self.pay = pay
self.email = first + '.' + last + '@company.com'
Employee.num_of_emps += 1
def fullname(self):
return '{} {}'.format(self.first, self.last)
def apply_raise(self):
self.pay = int(self.pay * self.raise_amt)
@classmethod
def set_raise_amt(cls, amount):
cls.raise_amt = amount
@classmethod
def from_string(cls, emp_str):
first, last, pay = emp_str_1.split('-')
return cls(first, last, pay)
@staticmethod
def is_workday(day):
if day.weekday() == 5 or day.weekday() == 6:
return False
return True
emp_1 = Employee('HAN', 'SeokDu', 50000)
emp_2 = Employee('KIM', 'Young', 30000)
import datetime
my_date = datetime.date(2020, 5, 14)
print(Employee.is_workday(my_date))
my_date = datetime.date(2020, 5, 16)
print(Employee.is_workday(my_date))
---------------------------------
True
False
---------------------------------