Data Science and Machine Learning (Theory and Projects) A to Z - Control Flow in Python: While Loop

The video tutorial introduces repetitive structures in programming and explains the concept of loops, particularly focusing on while loops. It provides a detailed example of using a while loop to print numbers up to a user-defined limit. The tutorial also includes a hands-on demonstration in Python, showcasing how to implement a while loop to perform repetitive tasks efficiently.

What is the primary purpose of using loops in programming?

• To perform tasks that require user input

• To improve the readability of the code

• To execute a block of code repeatedly

• To handle errors in the code

How does a while loop determine when to stop executing?

• It stops after a fixed number of iterations

• It stops when a specific error occurs

• It stops when the user interrupts the program

• It stops when the condition becomes false

In the given example, what is the initial value of the variable 'I'?

• N

• 5

• 1

• 0

What does the expression 'I += 1' do in the context of the loop?

• It decreases the value of I by 1

• It resets the value of I to 0

• It multiplies the value of I by 1

• It increases the value of I by 1

What is printed when the loop condition becomes false?

• Nothing is printed

• The word 'Done'

• The loop restarts

• The program crashes

What is the output of the loop when N is 5?

• 1, 2, 3, 4, Done

• 1, 2, 3, 4, 5, Done

• 1, 2, 3, Done

• 1, 2, Done

What is the significance of the print function in the loop?

• It initializes the loop

• It terminates the loop

• It checks the loop condition

• It outputs the current state of the loop