I'm reach level 4 and i have problems in defines function? i can't understand it very will☹️

Answer 1

Congratulations on your new level Hawaa Basher Ali !

Coming back to your problem,
" ' Defining a function '

Here’s a simple function named greet_user() that prints a greeting:

(1) def greet_user():
(2) """Display a simple greeting."""
(3) print("Hello!")
(4) greet_user()

This example shows the simplest structure of a function. The line at (1) uses the keyword def to inform Python that you’re defining a function. This is the function definition, which tells Python the name of the function and, if applicable, what kind of information the function needs to do its job. The parentheses hold that information. In this case, the name of the function is greet_user(), and it needs no information to do its job, so its parentheses are empty. (Even so, the parentheses are required.) Finally, the definition ends in a colon. Any indented lines that follow def greet_user(): make up the body of the function. The text at (2) is a comment called a docstring, which describes what the function does. Docstrings are enclosed in triple quotes, which Python looks for when it generates documentation for the functions in your programs. The line print("Hello!") (3) is the only line of actual code in the body of this function, so greet_user() has just one job: print("Hello!"). When you want to use this function, you call it. A function call tells Python to execute the code in the function. To call a function, you write the name of the function, followed by any necessary information in parentheses, as shown at (4). Because no information is needed here, calling our function is as simple as entering greet_user().
As expected, it prints Hello!:

Hello! "

#Excerpts from a book

Answer 2

thank you a lot 🤗 😍 😍