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python course 4 week 1 Creating Objects Inheritance

admin 11月 13, 2020 0

Objects in Python 3

Class: a template
Attribute: a variable within a class
Method: a function within a class
Object: a particular instance of a class
Constructor: code that runs when an object is created
Inheritance: the ability to extend a class to make a new class

Creating Objects

class :
    x = 0

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

an = PartyAnimal()

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

# So far 1
# So far 2
# So far 3

Inheritance

Put the class in the subclass.

class :
    x = 0
    name = ""

    def __init__(self, newName):
        self.name = newName
        print(self.name, "Constructed")

    def party(self):
        self.x = self.x + 1
        print('So far', 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") # Sally Constructed
s.party() # So far 1

j = FootballFan("Jim") # Jim Constructed
j.party() # So far 2
j.touchdown() # Jim points 7