Python-сообщество

 from abc import ABC, abstractmethod
class MyAbsClass(ABC):
    @abstractmethod
    def info(self):
        pass
class MyClass(MyAbsClass):
    def info(self):
        print("инфа")
obj = MyClass()
obj.info()

 
<?php
abstract class AbstractClass
{
    // Данные методы должны быть определены в дочернем классе
    abstract protected function getValue();
    abstract protected function prefixValue($prefix);

    // Общий метод
    public function printOut() {
        print $this->getValue() . "\n";
    }
}

class ConcreteClass1 extends AbstractClass
{
    protected function getValue() {
        return "ConcreteClass1";
    }

    public function prefixValue($prefix) {
        return "{$prefix}ConcreteClass1";
    }
}

class ConcreteClass2 extends AbstractClass
{
    public function getValue() {
        return "ConcreteClass2";
    }

    public function prefixValue($prefix) {
        return "{$prefix}ConcreteClass2";
    }
}

$class1 = new ConcreteClass1;
$class1->printOut();
echo $class1->prefixValue('FOO_') ."\n";

$class2 = new ConcreteClass2;
$class2->printOut();
echo $class2->prefixValue('FOO_') ."\n";
?>

  
# Python program demonstrate 
# abstract base class work  
from abc import ABC, abstractmethod  
class Car(ABC):  
 def mileage(self):  
 pass 
 
class Tesla(Car):  
 def mileage(self):  
 print("The mileage is 30kmph")  
class Suzuki(Car):  
 def mileage(self):  
 print("The mileage is 25kmph ")  
class Duster(Car):  
  def mileage(self):  
   print("The mileage is 24kmph ")  
 
class Renault(Car):  
    def mileage(self):  
     print("The mileage is 27kmph ")  
 
# Driver code  
t= Tesla ()  
t.mileage()  
 
r = Renault()  
r.mileage()  
 
s = Suzuki()  
s.mileage()  
 
d = Duster()  
d.mileage() 

 class MyClass():
    def info(self):
        pass
class MySubClass(MyClass):
    def info(self):
        print("инфа")
MySubClass().info()