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Published in:
2019 | OriginalPaper | Chapter
2. Decision Making
Author : Ben Stephenson
Published in: The Python Workbook
Publisher: Springer International Publishing
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Abstract
Most programs that solve interesting problems need to make decisions so that they can perform different actions in response to different input values. Python includes several decision making constructs, all of which evaluate a condition to determine whether or a statement (or group of statements) that is present in the program is executed or skipped. These decision making constructs include:
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An if statement that allows a group of statements to be either executed or skipped
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An if-else statement that causes exactly one of two groups of statements to execute
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An if-elif-else statement that causes exactly one of several groups of statements to execute
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An if-elif statement that causes at most one of several groups of statements to execute
All of these decision making constructs include a condition that is evaluate to determine which group of statements, if any, executes. The conditions can include relational operators and Boolean operators, both of which are discussed in this chapter. It ends with 28 exercises that allow the reader to put the concepts introduced in this chapter into practice.