Object-oriented programming

Object-oriented programming

1. Object-oriented programming is based on the concept of modeling the target problem in your programs.

2. Object-oriented programming reduces errors and promotes code reuse. Python is an object-oriented language. Objects defined in Python have the following characteristics:

   • Identity. Each object must be distinguished and this must be able to be demonstrated by evidence. The is and is not tests exist for this purpose.
   • State Each object must be able to store state. For this purpose, there are attributes, such as instance variables and fields.
   • Behaviour. Each object must be able to manipulate its state. For this purpose there are methods.

3. Components

   • Inheritance
     • It allows
       • define new classes based on existing ones
   • Abstraction
     • It's a
       • term external to the object, which controls the way it is seen by others
   • Objects
     • Composed by
       • attributes and operations kind
         • -public -private -protected
   • Encapsulation
     • It allows
       • implementation and graphical interface
         • generate
           • describe the combination of data structures and methods that are manipulated by the object
   • polymorphism
     • It is
       • the possibility that a reference to objects of a class can also be specified with objects of descendants of this
   • Types
     • Formed by
       • Class variable
       • Class methods

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