5: Loops
- Last updated
- Mar 30, 2025
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- 5.0: Introduction
- This page covers programming loops, detailing their function to execute statements based on a condition. It emphasizes practical applications, such as monitoring phone idle status and iterating through lists. The chapter introduces two loop types—for loops and while loops—and explains the use of break and continue statements to manage loop execution flow.
- 5.1: While Loop
- This page explains Python's while loop, detailing its functionality to repeatedly execute code while a condition is true. It offers examples like generating Fibonacci numbers and counting odd numbers, alongside checkpoints and exercises to enhance comprehension. Users are encouraged to apply while loops in practical tasks, such as handling user inputs and calculating sums of odd integers within specified ranges.
- 5.2: For Loop
- This page explains the for loop construct in Python, highlighting its use for iterating over containers like ranges, strings, and lists. It covers the range() function for sequence generation and includes practical examples and exercises. Users can practice tasks like counting characters and printing number sequences while assessing their understanding through checkpoints. Specific programming exercises, such as counting spaces in a string and identifying even and odd numbers, reinforce skills.
- 5.3: Nested Loops
- This page discusses the implementation and functionality of nested loops, including both while and for loops. It features examples such as printing doctor appointment slots and various practice exercises. The content emphasizes mixing loop types and includes "Try It" exercises designed to help users practice creating specific patterns with nested loops.
- 5.4: Break and Continue
- This page outlines learning objectives for using break and continue statements in programming loops. The break statement enables exiting loops when conditions are met, while the continue statement skips the remainder of a loop without exiting. The text discusses infinite loops, provides examples, and includes practical exercises to reinforce these concepts, enhancing runtime efficiency and control flow in programming.
- 5.5: Loop Else
- This page explains the loop else statement, which executes after a loop if it completes without interruption by a break. It demonstrates its application through an example of searching for the number 10 in a list, conveying different messages based on whether it is found. The section also includes practice problems to enhance understanding, featuring output prediction exercises and a programming task focused on summing numbers less than 10 in a list.
- 5.6: Chapter Summary
- This page discusses loop constructs in programming, including while and for loops, the range() function for integer sequences, and nested loops. It explains control statements like break and continue and the use of an else statement with loops. The chapter provides examples and concludes with a practical exercise to write a program that prints the first N prime numbers.
