callable object class and magic methods __call__, __getitem__

tricks.py

class BaseClass(object):
	def __init__(self):
		"""Initialise newly created object.
		"""
		super(BaseClass, self).__init__()
		print "Constructor called."

	def __call__(self, storage):
		"""Implements function call operator.
		"""
		print "__call__ called with {0}".format(storage)


class Magic(BaseClass):
	"""Main Magic class.
	"""
	def __init__(self, name, spell):
		print "{0} from Magic class.".format(spell)
		super(Magic, self).__init__()
		self.name = name
		self.spell = spell

	def __getitem__(self, key):
		print ("Inside `__getitem__` method!")
		return getattr(self, key)

	def __setitem__(self, key, value):
		self.__dict__[key] = value



world = Magic("Sqincsh", "Almahor")
print world['name']
world["Enter"] = "Bob"
world("test")
print world["Enter"]


class Building(object):
	 def __init__(self, floors):
		 self._floors = [None]*floors
	 def __setitem__(self, floor_number, data):
		  self._floors[floor_number] = data
	 def __getitem__(self, floor_number):
		  return self._floors[floor_number]

building1 = Building(4) # Construct a building with 4 floors
building1[0] = 'Reception'
building1[1] = 'ABC Corp'
building1[2] = 'DEF Inc'
print( building1[2] )

#Almahor from Magic class.
#Constructor called.
#Inside `__getitem__` method!
#Sqincsh
#__call__ called with test
#Inside `__getitem__` method!
#Bob
#DEF Inc