While loop with funny examples

Example 1: 

while loop is "control flow" statement and it stops executing the block only if the condition fails

The first example shows how to validate on the fly using a while loop. Users want to hit the bell and try and try, and at a certain moment, the system allows them to be admitted. Let us examine the number 10, which satisfies the requirement to be admitted.

bell = int(input('Ring the doorbell:= '))

while True:

    if bell == 10:

        print("ah! Welcome to home!")

        break

    else:

        bell = int(input('Ring the doorbell:= '))

Example 2:

The second example illustrates that the traffic light will change every two seconds and is a very humorous example. "turtle library" was only used to fill in the color and display the circle. how while loop also used a major role in showcasing the three lights Red, Yellow, and Green.

import turtle as ttl

import time

def draw_circle(color):

    # Clear the previous drawing

    ttl.clear()

    # Create a turtle object

    my_turtle = ttl.Turtle()    

    ttl.setup(width=400, height=400)

    # Set fill color

    my_turtle.fillcolor(color)    

    my_turtle.penup()

    my_turtle.goto(0, -180)  

    my_turtle.pendown()

    # Begin filling the circle

    my_turtle.begin_fill()

    # Draw a full circle with a radius of 180 pixels

    my_turtle.circle(180)

   

    my_turtle.end_fill()

# List of colors

l1 = ['red', 'green', 'yellow']

# Iterate through the list

count = 0

while True:

    draw_circle(l1[count])

    time.sleep(2)

    count +=1    

    if count == 3:

        ttl.bye()

        break

ttl.done()