Instance Objects Are Concrete Items

When we call a class object, we get an instance object. Here’s an overview of the key points behind class instances:

 

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  • Calling a class object like a function makes a new instance object. Each time a class is called, it creates and returns a new instance object. Instances represent concrete items in your program’s domain.
  • Each instance object inherits class attributes and gets its own namespace. Instance objects created from classes are new namespaces; they start out empty but inherit attributes that live in the class objects from which they were generated.
  • Assignments to attributes of self in methods make per-instance attributes. Inside class method functions, the first argument (called self by convention) references the instance object being processed; assignments to attributes of self create or change data in the instance, not the class.