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The First while Loop

The while loop is used to repeat a block of code as long as a specified condition evaluates to True. The condition is checked at the beginning of each iteration, and the loop stops when the condition becomes False.

python

condition: a Boolean expression that evaluates to True or False.

We will print all destinations from the travel_list one by one.


              123456789
            
travel_list = ['Monako', 'Luxemburg', 'Liverpool', 'Barcelona', 'Munchen']

# Initialize the index
i = 0

# Print each destination using a while loop
while i < len(travel_list):
    print(travel_list[i])
    i += 1

The variable i starts at 0, which represents the first index of the travel_list;
The while loop checks if i is less than the length of the list (len(travel_list)). This ensures the loop doesn't exceed the list bounds;
The loop prints the destination at the current index travel_list[i];
The variable i is incremented by 1 in each iteration using i += 1;
When i becomes equal to the length of the list, the condition evaluates to False, and the loop stops.

Task

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You are a traveler planning your next adventure. To make things manageable, you decide to visit only half of the countries from a given list.

Use a while loop to go through the list, selecting only the first half of the destinations.
Use // for integer division to correctly determine the halfway point of the list for the while loop condition.
Store your chosen countries in the selected list.

Solution

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Section 2. Chapter 1

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The First while Loop

python

condition: a Boolean expression that evaluates to True or False.

We will print all destinations from the travel_list one by one.


              123456789
            
travel_list = ['Monako', 'Luxemburg', 'Liverpool', 'Barcelona', 'Munchen']

# Initialize the index
i = 0

# Print each destination using a while loop
while i < len(travel_list):
    print(travel_list[i])
    i += 1

The variable i starts at 0, which represents the first index of the travel_list;
The while loop checks if i is less than the length of the list (len(travel_list)). This ensures the loop doesn't exceed the list bounds;
The loop prints the destination at the current index travel_list[i];
The variable i is incremented by 1 in each iteration using i += 1;
When i becomes equal to the length of the list, the condition evaluates to False, and the loop stops.

Task

Swipe to start coding

You are a traveler planning your next adventure. To make things manageable, you decide to visit only half of the countries from a given list.

Use a while loop to go through the list, selecting only the first half of the destinations.
Use // for integer division to correctly determine the halfway point of the list for the while loop condition.
Store your chosen countries in the selected list.

Solution

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 2. Chapter 1

Switch to desktop for real-world practiceContinue from where you are using one of the options below