Quiz 3: Predicates, Conditionals, and While Loops

Learning Goals

Booleans and Predicates

• Use relational and logical operators (<, >, ==, !=, and, or, not, etc.) to write expressions
• Define the behavior of logical operations including and, or, and not
• Write small predicates using logical and relational operators
• Predict the values produced by expressions that use a single relational and logical operators
• Understand and define predicates (functions that return booleans)

Conditionals

• Predict/trace the operation of nested and chained conditionals
• Reason about and predict the execution flow of code in the presence of conditional, assignment, and return statements
• Model the execution of code without running it on a computer
• Translate the behavior of code into its semantic meaning, and compare the semantics of multiple code snippets
• Write complex conditionals
• Solve problems using conditional statements
• Translate English problem descriptions into code

While Loops

• Use while loops to translate English descriptions of iteration into Python
• Explain the rules governing a while loop's execution in English
• Use indexing to access elements in a string from the front to back
• Use print statements to illustrate the operation of a loop
• Predict the effects of while loops

Study Guide

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Answer Key

Solutions

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