The if/else Statements in a for Loop

In programming, the if/else construct is frequently used within loops to execute specific actions based on conditions. This combination allows us to evaluate each item in a sequence and decide what actions to take based on its value.

if: checks a condition. If the condition is True, the corresponding block of code runs;
else: specifies what to do if the condition in the if statement is False.

To learn more about how the if/else construct works and how to use it effectively, check out the Introduction to if-else Statement chapter.

Example: Categorizing Cities by Length

Instead of just printing messages, let's categorize the cities in the travel_list based on their name lengths. Cities with names longer than 7 characters will be labeled as "long", while others will be labeled as "short".


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# List of travel destinations
travel_list = ["Monako", "Luxemburg", "Liverpool", "Barcelona", "Munchen"]

# Categorizing cities by name length
for city in travel_list:
    if len(city) > 7:
        print(f"{city} has a long name.")
    else:
        print(f"{city} has a short name.")

Explanation

A for loop iterates through each city in the travel_list;
Inside the loop, the len() function checks the length of each city name.
If the name length is greater than 7, it categorizes it as having a "long name";
Otherwise, it categorizes it as having a "short name".

Note

In mathematics and programming, 0 is considered an even number because it is divisible by 2 without a remainder. The % operator calculates the remainder of a division, often used to check divisibility or alternating patterns.

Task

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Traveling can be fun, but managing expenses is crucial! In this task, you'll analyze travel costs and categorize each expense as either "even" or "odd" using Python. Practice your skills with loops, conditionals, and the % operator while organizing these expenses effectively!

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Section 1. Chapter 4

The if/else Statements in a for Loop

if: checks a condition. If the condition is True, the corresponding block of code runs;
else: specifies what to do if the condition in the if statement is False.

To learn more about how the if/else construct works and how to use it effectively, check out the Introduction to if-else Statement chapter.

Example: Categorizing Cities by Length


              123456789
            
# List of travel destinations
travel_list = ["Monako", "Luxemburg", "Liverpool", "Barcelona", "Munchen"]

# Categorizing cities by name length
for city in travel_list:
    if len(city) > 7:
        print(f"{city} has a long name.")
    else:
        print(f"{city} has a short name.")

Explanation

A for loop iterates through each city in the travel_list;
Inside the loop, the len() function checks the length of each city name.
If the name length is greater than 7, it categorizes it as having a "long name";
Otherwise, it categorizes it as having a "short name".

Note

In mathematics and programming, 0 is considered an even number because it is divisible by 2 without a remainder. The % operator calculates the remainder of a division, often used to check divisibility or alternating patterns.

Task

Swipe to show code editor

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 4

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

Python Loops Tutorial

The if/else Statements in a for Loop

Example: Categorizing Cities by Length

Explanation

The if/else Statements in a for Loop

Example: Categorizing Cities by Length

Explanation