Learn Counting with Loops

In programming, you often have to use a counter variable to perform basic arithmetic operations within a loop. This approach allows us to iteratively process data, such as summing values or tracking totals.

For example, if you want to calculate the sum of all numbers in a specific range, you can initialize a counter variable and update it during each iteration.

Let's adapt this concept to our common topic, working with the travel_list. Suppose you want to calculate the total length of all city names in our list.


              1234567891011
            
travel_list = ['Monako', 'Luxemburg', 'Liverpool', 'Barcelona', 'Munchen']

# Initialize counter
total_length = 0

# Iteration through the list
for city in travel_list:
    # Add the length of each city name
    total_length += len(city)

print('Total length of all city names:', total_length)

Task

Swipe to start coding

You are working on a travel application that needs to analyze country names for display purposes. Your task is to find out how many countries in the list have exactly 6 letters in their names. This will allow the app to group and display countries in a visually appealing and organized way.

Set up a variable to keep track of how many countries have exactly 6 letters in their names.
Iterate through the list of countries.
Check the length of each country name by using the len() function.
Update the counter. If a country's name has 6 letters, increment your counter by 1.

Solution

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Section 1. Chapter 3

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For example, if you want to calculate the sum of all numbers in a specific range, you can initialize a counter variable and update it during each iteration.

Let's adapt this concept to our common topic, working with the travel_list. Suppose you want to calculate the total length of all city names in our list.


              1234567891011
            
travel_list = ['Monako', 'Luxemburg', 'Liverpool', 'Barcelona', 'Munchen']

# Initialize counter
total_length = 0

# Iteration through the list
for city in travel_list:
    # Add the length of each city name
    total_length += len(city)

print('Total length of all city names:', total_length)

Task

Swipe to start coding

Set up a variable to keep track of how many countries have exactly 6 letters in their names.
Iterate through the list of countries.
Check the length of each country name by using the len() function.
Update the counter. If a country's name has 6 letters, increment your counter by 1.

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 1. Chapter 3

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For example, if you want to calculate the sum of all numbers in a specific range, you can initialize a counter variable and update it during each iteration.

Let's adapt this concept to our common topic, working with the travel_list. Suppose you want to calculate the total length of all city names in our list.


              1234567891011
            
travel_list = ['Monako', 'Luxemburg', 'Liverpool', 'Barcelona', 'Munchen']

# Initialize counter
total_length = 0

# Iteration through the list
for city in travel_list:
    # Add the length of each city name
    total_length += len(city)

print('Total length of all city names:', total_length)

Task

Swipe to start coding

Set up a variable to keep track of how many countries have exactly 6 letters in their names.
Iterate through the list of countries.
Check the length of each country name by using the len() function.
Update the counter. If a country's name has 6 letters, increment your counter by 1.

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!

Counting with Loops

Solution

Awesome!

Counting with Loops

Solution

Awesome!

Counting with Loops

Solution