Expressions are also instructions to Python to perform a task. That task is to return a value, such as the result of a mathematical operation or the truth or falsity of a statement. Expressions can be assigned variables. Also, many of them use operators, which can be words like and,or, and not, or symbols such as + (plus), - (minus), * (multiplication), and = (equals). We'll cover operators in detail in Chapter 3. For now, just remember that expressions return a value and usually use operators.
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