Python Development Workshop DAY 06 QUEST
- 1. Python Programming Bootcamp - Week 2, Day 2 Loops – Introduction to for Loops Atta Muhammad [email protected] +923331971110 Quaid e Awam University of Engineering, Science and Technology
- 2. 02/03/2025 2 Learning Objectives Understand how for loops work in Python. Learn the syntax of for loops and how to use them for iteration. Explore practical uses of for loops to automate repetitive tasks. Differentiate between while loops and for loops. Atta Muhammad Panhyar
- 3. 02/03/2025 3 What is a for Loop? Definition: A for loop is used to iterate over a sequence (such as a list, string, or range) and execute a block of code for each element in the sequence. Why Use for Loops? Simplifies code when you need to repeat actions for every item in a sequence or range of numbers. Atta Muhammad Panhyar
- 4. 02/03/2025 4 for Loop Syntax and Example Syntax: Example: Atta Muhammad Panhyar
- 5. 02/03/2025 Atta Muhammad Panhyar 5 How for Loops Work Visualize the Iteration: The for loop picks the first item from the sequence, assigns it to the loop variable, runs the code, then moves to the next item in the sequence. Example with a List:
- 6. 02/03/2025 Atta Muhammad Panhyar 6 The range() Function What is range()? A function used to generate a sequence of numbers, commonly used in for loops. range(start, stop, step) start: The starting number (default is 0). stop: The number at which the sequence stops (exclusive). step: The increment between numbers (default is 1).
- 7. 02/03/2025 Atta Muhammad Panhyar 7 Hands-On Exercise 1 Task: Write a program that prints all numbers from 1 to 10 using a for loop and range(). Hint: Use range(1, 11) to include numbers from 1 to 10.
- 8. 02/03/2025 Atta Muhammad Panhyar 8 Looping Over Strings Explanation: Strings are sequences, so you can use a for loop to iterate over each character in a string. Example:
- 9. 02/03/2025 Atta Muhammad Panhyar 9 Looping Over Lists Example: Exercise: Modify the code to greet each city by adding the text "Welcome to" before the city name.
- 10. 02/03/2025 Atta Muhammad Panhyar 10 Hands-On Exercise 2 Task: Write a program that prints the square of every number from 1 to 10 using a for loop and range(). Hint: Use print(num**2) inside the loop.
- 11. Nested for Loops Explanation: You can place one for loop inside another to perform more complex tasks. Example: 02/03/2025 Atta Muhammad Panhyar 11
- 12. 02/03/2025 Atta Muhammad Panhyar 12 Comparing for and while Loops while Loop: A while loop runs while a condition is True. It’s useful when you don’t know how many times you need to loop. for Loop: A for loop iterates over a known sequence or range. It’s useful when you know how many times you want to iterate.
- 13. 02/03/2025 Atta Muhammad Panhyar 13 Comparing for and while Loops while Loop: A while loop runs while a condition is True. It’s useful when you don’t know how many times you need to loop. for Loop: A for loop iterates over a known sequence or range. It’s useful when you know how many times you want to iterate.
- 14. 02/03/2025 Atta Muhammad Panhyar 14 Comparing for and while Loops
- 15. 02/03/2025 Atta Muhammad Panhyar 15 Hands-On Exercise 3 Task: Write a program that prints the multiplication table for the number 5 (from 1 to 10) using a for loop. Hint: Use for i in range(1, 11) and multiply i by 5 inside the loop.
- 16. 02/03/2025 Atta Muhammad Panhyar 16 The break Statement in for Loops Explanation: The break statement allows you to exit a loop before it has looped through all the items. Example:
- 17. 02/03/2025 Atta Muhammad Panhyar 17 The continue Statement in for Loops Explanation: The continue statement skips the rest of the current iteration and moves to the next iteration. Example:
- 18. 02/03/2025 Atta Muhammad Panhyar 18 Hands-On Exercise 4 Task: Write a program that prints all odd numbers between 1 and 20 using a for loop and the continue statement. Hint: Skip the even numbers using continue
- 19. 02/03/2025 Atta Muhammad Panhyar 19 Looping Over a Dictionary Explanation: You can loop over dictionaries to access keys and values. Example:
- 20. 02/03/2025 Atta Muhammad Panhyar 20 Group Activity Task: Create a program that generates a list of 10 random numbers (between 1 and 100) and prints the sum and average of the numbers using a for loop. Hint: Use sum() and len() to calculate the average after generating the list.
- 21. 02/03/2025 Atta Muhammad Panhyar 21 Common Mistakes in for Loops Forgetting to update the loop variable: In cases where a manual update is needed (like in custom ranges), ensure that the loop variable is updated. Infinite loops: Avoid creating infinite loops with incorrect ranges or loop conditions.
- 22. 02/03/2025 Atta Muhammad Panhyar 22 Recap and Key Takeaways Key Takeaways: for loops are powerful for iterating over sequences like lists, strings, and ranges. Use range() to generate sequences of numbers. break and continue statements allow for more control within loops. Nested for loops can be used for multi-dimensional tasks. Next Session: Combining for loops with other structures like lists, dictionaries, and functions.
- 23. 02/03/2025 Atta Muhammad Panhyar 23 Q&A and Wrap-Up Any questions or clarifications. Recap
- 24. 02/03/2025 Atta Muhammad Panhyar 24 MATCH THE SOLUTION 😒
- 26. 02/03/2025 Atta Muhammad Panhyar 26 Exercise ♂️ ️ ♂️ ♂️ ♂️ ♂️ ♂️ ♂️ ♂️ ♂️ ♂️ ♂️ ♂️ ♂️ ♂️
- 27. Exercise 🤗 02/03/2025 Atta Muhammad Panhyar 27
- 28. Exercise 🤐 02/03/2025 Atta Muhammad Panhyar 28
- 29. Exercise 💎 02/03/2025 Atta Muhammad Panhyar 29