implementation of internal DSL for Prototype-based programming in Python

prototype-based.py

import copy
# Имплементация прототип ориентированного internal DSL для Python по мотивам Io Language http://habrahabr.ru/blogs/crazydev/28041/
# Implementation of prototype oriented internal DSL for python based on article about Io Language http://habrahabr.ru/blogs/crazydev/28041/

class IoObject(dict):
    def __init__(self):
        self.clone = copy.copy
    def __getattr__(self, attr):
        if 'get_slot' in self:
            val = self["get_slot"](attr)#может вызвать бесконечность / infinite loop can occur 
        else:
            val = self[attr]
        if callable(val):
            return lambda *args: val(self,*args)# делаем керреинг и замыкание на вызове чтобы работало клонирование без замыканий / do currying on get
        return val
    def __setattr__(self, attr, val):
        if 'set_slot' in self:
            self["set_slot"](attr,val)#может вызвать бесконечность / infinite loop can occur 
        else:
            self[attr] = val

Object = IoObject()

#все готово поехали / ready to go

Mushroom = Object.clone()
Mushroom.isPoison = False

Mushroom.whenEaten = lambda self, person: person.kill() if self.isPoison else None

InfectedMushroom = Mushroom.clone()
InfectedMushroom.isPoison = True

Man = Object.clone()
Man.state = "Living"

Man.eat = lambda self, food: food.whenEaten(self)

def kill(self):
    self.state = "Dead"
    
Man.kill = kill

Lenin = Mushroom.clone()
Lenin.isPoison = False
Lenin.speak = lambda self: print("Патриотизм - ")

Lenin.speak()

Man.eat(Mushroom)
print(Man.state)

Man.eat(InfectedMushroom)
print(Man.state)

Singleton = Object.clone()
Singleton.clone = lambda obj: Singleton

Singleton2 = Singleton.clone()
Singleton.test = "singleton is ok"
print(Singleton2.test)

'''
This is original io code

Mushroom := Object clone

Mushroom isPoison := false

Mushroom whenEaten := method(person,

  if(self isPoison == true, 

    person kill

  ) 

)

Man := Object clone

Man state := "Living"

Man eat := method(food,

  food whenEaten(self)

)

Man kill := method(

  self state := "Dead"

)

Lenin := Mushroom clone

Lenin isPoison := false

Lenin speak := method(

  "Патриотизм - одно из наиболее глубоких чувств, 

   закрепленных веками и тысячелетиями обособленных отечеств." println 

)

InfectedMushroom := Mushroom clone

InfectedMushroom isPoison := true 

Man eat(Mushroom)

Man state println

Man eat(InfectedMushroom)

Man state println

Lenin speak

Man eat(Lenin)

Singleton := Object clone

Singleton clone := Singleton
'''