Python Programming Concepts

Named storage location for a value (e.g., citizens = 330_000_000)

Fixed value written in source code (e.g., 42, 'USA', True)

Name given to variables, functions, etc. (e.g., tax_rate in snake_case)

Reserved word with special meaning (e.g., def, while, import)

Symbol that performs an operation (e.g., +, //, in)

Code that produces a value (e.g., x * 2 + 1)

Complete instruction (e.g., print('Hello'))

Group of statements indented at the same level (e.g., if x: …)

Region where a name is visible (e.g., LEGB order)

Local → Enclosing → Global → Built-in scope order (e.g., global x)