Using Condition Statements in a while Loop

The if/else structure can be combined with a while loop to add conditional logic for each iteration. This allows you to perform different actions based on specific conditions while the loop executes.

Let's apply this concept to our travel_list. The program will categorize cities as having "short" or "long" names depending on their length (less than 8 characters for short, 8 or more for long).


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travel_list = ["Monako", "Luxemburg", "Liverpool", "Barcelona", "Munchen"]

# Initialize index
i = 0

# Categorize cities by name length
while i < len(travel_list):
    if len(travel_list[i]) < 8:
        print(travel_list[i], "has a short name.")
    else:
        print(travel_list[i], "has a long name.")
    i += 1

The index i is initialized to 0 to start from the first city;
The while loop runs as long as i is less than the length of the travel_list;
Conditional Logic:
- if: checks if the length of the current city name is less than 8 characters and prints a message accordingly;
- else: handles all other cases where the name length is 8 or more characters;
The i variable is incremented at the end of each iteration to move to the next city.

Task

Swipe to start coding

You are a developer working on a travel app that displays a list of country names. For design purposes, the app needs to highlight countries with short names. To achieve this, you decide to automate the process.

Count the total number of countries in the countries list that have names shorter than 7 characters.
Use a while loop to iterate through the country names.

Solution

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Section 2. Chapter 3

Using Condition Statements in a while Loop

Let's apply this concept to our travel_list. The program will categorize cities as having "short" or "long" names depending on their length (less than 8 characters for short, 8 or more for long).


              123456789101112
            
travel_list = ["Monako", "Luxemburg", "Liverpool", "Barcelona", "Munchen"]

# Initialize index
i = 0

# Categorize cities by name length
while i < len(travel_list):
    if len(travel_list[i]) < 8:
        print(travel_list[i], "has a short name.")
    else:
        print(travel_list[i], "has a long name.")
    i += 1

The index i is initialized to 0 to start from the first city;
The while loop runs as long as i is less than the length of the travel_list;
Conditional Logic:
- if: checks if the length of the current city name is less than 8 characters and prints a message accordingly;
- else: handles all other cases where the name length is 8 or more characters;
The i variable is incremented at the end of each iteration to move to the next city.

Task

Swipe to start coding

Count the total number of countries in the countries list that have names shorter than 7 characters.
Use a while loop to iterate through the country names.

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 3

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