As we have seen, in Python, all variables have a type. And we can use the built-in
dir function to examine the capabilities of a variable. We can use
dir with the classes that we create.
class PartyAnimal: x = 0 def party(self) : self.x = self.x + 1 print("So far",self.x) an = PartyAnimal() print ("Type", type(an)) print ("Dir ", dir(an)) print ("Type", type(an.x)) print ("Type", type(an.party)) # Code: http://www.py4e.com/code3/party3.py
When this program executes, it produces the following output:
Type <class '__main__.PartyAnimal'> Dir ['__class__', '__delattr__', ... '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'party', 'x'] Type <class 'int'> Type <class 'method'>
You can see that using the
class keyword, we have created a new type. From the
dir output, you can see both the
x integer attribute and the
party method are available in the object.