Namespaces

An assignment statement creates a symbolic name that you can use to reference an object.

mystring = "This is my string"
# (symbolic name) assigned = to (object)

Python organises symbolic names and objects into namespaces. A namespace is a collection of the currently defined symbolic names and imformation about the objects assigned to them. As python executes a program it creates namespaces and deletes them when they’re no longer necessary. The 4 types of namespace.

  1. Built-in
  2. Global, Defined at the top level of the program or module.
  3. Enclosing, defined within Functions.
  4. Local, Defined at the innermost scope (nested functions for example).

Python will start at the local scope and work it’s way out to find what it’s looking for.


  • Modules
    • When you need to use code from another module in your app. Alternatively import module code within Namespaces:
  • Constructors and Self
    • Remember, a class is a template for an object (Ref; Classes and Objects). You can create many objects, known as instances, from your class. Every time you create an object from a class it will create new Namespaces for that instance. A constructor is responsible for calculating that memory allocated to that instance (() is your constructor) which will call the __init__ method for you. The constructor is called automatically every time you create a new instance.