jonascheng

import abc
import datetime

class DBStore(abc.ABC):

  @abc.abstractmethod
  def connect(self):
    return NotImplemented

  @abc.abstractmethod

jonascheng

import datetime

class MySQLStore:

  def connect(self):
    print('connect to mysql database')
  
  def serialize(self, first_name: str , last_name: str, birth: datetime, hourly_rate: int, labor_hours: int):
    print('serialized data to mysql database')

jonascheng

class Dove(FlyableBird):

  def walk(self):
    return 0.1

  def fly(self):
    return 10

class Eagle(FlyableBird):

jonascheng

import abc

class Walkable(abc.ABC):

  @abc.abstractmethod
  def walk(self):
    return NotImplemented

class Flyable(abc.ABC):

jonascheng

class Penguin(Bird):

  def walk(self):
    return 1

  def fly(self):
    raise Exception('I cant fly')

jonascheng

class Dove(Bird):

  def walk(self):
    return 0.1

  def fly(self):
    return 10

class Eagle(Bird):

jonascheng

import abc

class Bird(abc.ABC):

  @abc.abstractmethod
  def walk(self):
    return NotImplemented

  @abc.abstractmethod
  def fly(self):

jonascheng

class SalesPerson(Employee):

  @property
  def bonus(self):
    return self._bonus
    
  @bonus.setter
  def bonus(self, bonus):        
      self._bonus = bonus

jonascheng

class EmployeePrinterForHR:  

  def printCSV(employee: Employee):
    print(u'{},{},{}'.format(employee.first_name, employee.last_name, employee.wage))

class EmployeePrinterForIT:

  def printCSV(employee: Employee):
    print(u'{},{},{}'.format(employee.first_name, employee.last_name, employee.birth))

jonascheng

import datetime

class Employee:
  // ...

  def printForHR(self):
    print(u'{},{},{}'.format(self.first_name, self.last_name, self.wage))

  def printForIT(self):
    print(u'{},{},{}'.format(self.first_name, self.last_name, self.birth))