The LEGB Rule & Understanding Python Scope
The concept of scope rules how variables and names are looked up in your code. It determines the visibility of a variable within the code. The scope of a name or variable depends on the place in your code where you create that variable. The Python scope concept is generally presented using a rule known as the LEGB rule.
The letters in the acronym LEGB stand for Local, Enclosing, Global, and Built-in scopes. This summarizes not only the Python scope levels but also the sequence of steps that Python follows when resolving names in a program.
In this video course, you’ll learn:
- What scopes are and how they work in Python
- Why it’s important to know about Python