https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:designing-algorithms-with-conditionals/x5279a44ae0ab15d6:compound-boolean-conditions/a/compound-boolean-expressions-with-logical-operators 2025-04-29T23:13:48.551241204Z Logical operators Learn how to combine multiple conditions into a compound boolean expression using the logical operators: not, and, or. article https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:designing-algorithms-with-conditionals/x5279a44ae0ab15d6:compound-boolean-conditions/v/evaluating-compound-boolean-expressions 2026-03-29T06:04:57.873105323Z Evaluating compound boolean expressions Trace how the computer evaluates compound boolean expressions with the logical operators and, or, and not. See how the computer optimizes to short-circuit evaluation if it already knows the result. Kim Merrill video https://cdn.kastatic.org/ka_thumbnails_cache/997086f6-e504-41ce-a471-4eaf205701e8_1280_720_base.png Evaluating compound boolean expressions Trace how the computer evaluates compound boolean expressions with the logical operators and, or, and not. See how the computer optimizes to short-circuit evaluation if it already knows the result. https://cdn.kastatic.org/ka-youtube-converted/p7pJMvD2sag.mp4/p7pJMvD2sag.mp4 276 Compound boolean expressions https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:designing-algorithms-with-conditionals/x5279a44ae0ab15d6:compound-boolean-conditions/e/evaluating-compound-boolean-expressions 2025-07-28T18:39:02.457442099Z Evaluate compound boolean expressions Evaluate compound boolean expressions with `and` and `or` operators. Nathaniel Shak exercise https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:designing-algorithms-with-conditionals/x5279a44ae0ab15d6:compound-boolean-conditions/v/booleans-program-design-content-moderation 2024-12-02T21:11:23.197431827Z Program design: content moderation Code along with a software engineer in this worked example using logical operators. Apply compound boolean expressions and if statements to design a content moderation algorithm. Use the logical and, or, and not operators to construct compound conditions that flag suspicious posts and feature useful posts. View the program used in this video at: https://www.khanacademy.org/python-program/content-moderation-booleans-program-design/6047366886637568 Kim Merrill video https://cdn.kastatic.org/ka_thumbnails_cache/7f9a2943-9120-4a0d-ba59-9969006add91_1280_720_base.png Program design: content moderation Code along with a software engineer in this worked example using logical operators. Apply compound boolean expressions and if statements to design a content moderation algorithm. Use the logical and, or, and not operators to construct compound conditions that flag suspicious posts and feature useful posts. View the program used in this video at: https://www.khanacademy.org/python-program/content-moderation-booleans-program-design/6047366886637568 https://cdn.kastatic.org/ka-youtube-converted/NMG8sR_1YTI.mp4/NMG8sR_1YTI.mp4 289 Compound boolean expressions https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:designing-algorithms-with-conditionals/x5279a44ae0ab15d6:compound-boolean-conditions/pc/input-validation 2025-07-29T23:31:19.793609631Z Challenge: Date validation Practice compound boolean conditions and conditionals to validate dates entered in a form. challenge