Python concept question. Python, the built-in dictionary data type.

You can define a dictionary by enclosing the items or members inside symbols. A list variable name followed by an expression in symbols means you are using indexing, slicing, or striding. Each item or member in a dictionary is a compound object, comprising a/an A restriction on the data types for dictionary keys are they must be undefined ( a.k.a. parentheses triple-quote key/value pair [] a.k.a. square bracket integer list mutable { } a.k.a. curly brace unique and immutable complex number colon variable