Simple OO program

Also from Dr. Chuck.

class PartyAnimal:
   x = 0

   def party(self) :
     self.x = self.x + 1
     print "So far",self.x

an = PartyAnimal()

an.party()
an.party()
an.party()

Class with constructor / destructor

class PartyAnimal:
   x = 0

   def __init__(self):
     print "I am constructed"

   def party(self) :
     self.x = self.x + 1
     print "So far",self.x

   def __del__(self):
     print "I am destructed", self.x

an = PartyAnimal()
an.party()
an.party()
an.party()

Field name added to Class

class PartyAnimal:
   x = 0
   name = ""

   def __init__(self, nam):
     self.name = nam
     print self.name,"constructed"

   def party(self) :
     self.x = self.x + 1
     print self.name,"party count",self.x

s = PartyAnimal("Sally")
s.party()

j = PartyAnimal("Jim")
j.party()
s.party()

Inheritance

class PartyAnimal:
   x = 0
   name = ""
   def __init__(self, nam):
     self.name = nam
     print self.name,"constructed"

   def party(self) :
     self.x = self.x + 1
     print self.name,"party count",self.x

class FootballFan(PartyAnimal):
   points = 0
   def touchdown(self):
      self.points = self.points + 7
      self.party()
      print self.name,"points",self.points

s = PartyAnimal("Sally")
s.party()

j = FootballFan("Jim")
j.party()
j.touchdown()