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Introduction to Python

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  1. Python: Basics
    15 Quizzes
  2. Python: Control Flow
    12 Quizzes
  3. Python: Errors
    5 Quizzes
Lesson 2, Topic 1
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Python: Boolean Expressions

Yasin Cakal 5 Oct 2021
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To incorporate control flow into our program, we need to determine whether something is true or false. A boolean expression is a statement that has only two possible outcomes: True or False.

It is going to rain today!

This statement is a boolean expression because it can either be True or False. There are no other alternatives. It might snow, hail, or be sunny all day! As long as it did not rain, the statement is False! But, if a drop of rain touches the ground, the statement is True!

Blue is the best color ever!

This is NOT a boolean expression because it is an opinion. It might be true according to me, but false according to you.

The alphabet starts with the letter C!

This is obviously false, but it is a boolean expression. Remember that a boolean expression can only be true or false!

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