Arithmetic Expressions | Operators Precedence in Python

An expression is a combination of items, like variables, literals, operators, and parentheses, that evaluates to a value, like 2 * (x + 1). A common place where expressions are used is on the right side of an assignment statement, as in y = 2 * (x + 1).

A literal is a specific value in code like 2. An operator is a symbol that performs a built-in calculation, like +, which performs addition.