[Python] class, instance

Class definition

** class Class name: **

class MenuItem:
    pass

Instance generation

** Variable name = Class () **

menu_item1 = MenuItem()

Instance variables

menu_item1.name = "Fin cutlet"

Get the value of an instance variable

** Instance. Instance variable name **

print(menu_item1.name)

Output result Fin cutlet

Method (function defined in class)

Method call ** Instance. Method name () **

The first argument is self

class MenuItem:
  def hello(self):
      print("Hello")

menu_item1 = MenuItem()
menu_item1.hello()

\ _ \ _ Init \ _ \ _ method

Processing can be executed immediately after instantiation

When using the __init__ method

class MenuItem:
  def __init__(self , name)
      self.name = name

menu_item1 = MenuItem("Fin cutlet")
print(menu_item1.name)

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