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Defining Functions

Defining your own functions in Python allows you to create reusable blocks of code tailored to specific tasks.

In Python, a function is a block of organized, reusable code that performs a single, related action. Functions help break down complex problems into smaller, manageable parts, making your code more modular and easier to understand.

Why Use Functions?

Reusability: Write once, use multiple times. Functions allow you to reuse code without rewriting it.
Modularity: Break down complex tasks into simpler, more manageable pieces.
Readability: Functions make your code cleaner and easier to read.

To define a function in Python, use the def keyword, followed by the function name and parentheses (). Inside the parentheses, you can specify parameters that the function will accept. The function body is indented and contains the code to be executed. In this example, greet_artist is a function that takes one parameter, artist_name, and prints a greeting message. To execute a function, you need to call it by its name and provide any required arguments.


              1234
            
def greet_artist(artist_name):
    print(f"Hello, {artist_name}! Welcome to the stage.")

greet_artist("Freddie Mercury")

Imagine you want to calculate the average duration of tracks in an album. You can define a function to perform this calculation.


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def calculate_average_duration(durations_list):
    total_duration = sum(durations_list)
    number_of_tracks = len(durations_list)
    average_duration = total_duration / number_of_tracks
    return average_duration

# Usage
track_durations = [354, 183, 482, 431]
average = calculate_average_duration(track_durations)
print(f"Average track duration: {average} seconds")

Opgave

Swipe to start coding

Your goal is to create the is_radio_friendly function that determines if a track is radio friendly based on its duration. A track is considered radio friendly if its duration is between 3 and 4 minutes, inclusive. This function is useful for organizing and categorizing tracks based on their suitability for radio play.

Inputs:

duration_ms: An integer representing the duration of the track in milliseconds.

Steps:

Check Duration: Use comparison operators to determine if duration_ms is between 180,000 and 240,000 milliseconds (inclusive).
Return the Result: Ensure the function returns a boolean indicating whether the track is radio friendly.

Løsning

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Sektion 1. Kapitel 6

solution.py

main.py

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Defining Functions

Defining your own functions in Python allows you to create reusable blocks of code tailored to specific tasks.

Why Use Functions?

Reusability: Write once, use multiple times. Functions allow you to reuse code without rewriting it.
Modularity: Break down complex tasks into simpler, more manageable pieces.
Readability: Functions make your code cleaner and easier to read.


              1234
            
def greet_artist(artist_name):
    print(f"Hello, {artist_name}! Welcome to the stage.")

greet_artist("Freddie Mercury")

Imagine you want to calculate the average duration of tracks in an album. You can define a function to perform this calculation.


              12345678910
            
def calculate_average_duration(durations_list):
    total_duration = sum(durations_list)
    number_of_tracks = len(durations_list)
    average_duration = total_duration / number_of_tracks
    return average_duration

# Usage
track_durations = [354, 183, 482, 431]
average = calculate_average_duration(track_durations)
print(f"Average track duration: {average} seconds")

Opgave

Swipe to start coding

Inputs:

duration_ms: An integer representing the duration of the track in milliseconds.

Steps:

Check Duration: Use comparison operators to determine if duration_ms is between 180,000 and 240,000 milliseconds (inclusive).
Return the Result: Ensure the function returns a boolean indicating whether the track is radio friendly.

Løsning

Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder

Var alt klart?

Tak for dine kommentarer!

Sektion 1. Kapitel 6

Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder