What Does It Return In Javascript?

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Python’s return statement tells Python to continue running a main program. You can use the return statement to send a value to the main program, such as a string or a list.

Functions are blocks of instructions that perform a specific task in programming. Once a function has been declared, it can be reused multiple times. The main advantage of using functions is that they can reduce the number of lines of code you write.

When working with functions in Python, you will come across the return statement. This instruction stops the execution of a function and returns the values ‚Äã‚Äãof a function to the main program.

In this tutorial, we’ll see how the return statement works and how to use return to send values ‚Äã‚Äãto a main program.

Update Python functions

Python includes a number of built-in functions, such as print () , str () and len () - which perform specific tasks.

You can declare your Python function using the def keyword. After using the def keyword, you must specify the name of your function. So you have to specify with a series of parentheses. The parenthesis can contain any parameters that you want your function to accept.

Here is the syntax for declaring a function in Python:

Python Return

The Python keyword return exits a function and tells Python to continue executing the main program. The return keyword can return a value to the main program. A value can be a string, a tuple, or any other object.

This is useful as it allows us to process data within a function. Then we can send the data back to our main program, so that we can use it outside of our function.

Data processed in a function can only be accessed inside the function. This is only the case if you use the return statement to send the data elsewhere in the program.

Here is the syntax of the return keyword:

The return keyword can appear anywhere in a function and when the code executes the return statement, the function will be closed.

The return statement returns a value to the rest of the program, but it can also be used on its own. If no expression is defined after the return statement, None is returned Here is an example in action:

Our code returns: None.

You can decide not to specify a value if you only want a function to stop executing after a particular point. This is a less common use case of Python’s return statement.

Suppose we are running a restaurant. We want to create a program that returns the cost of the sandwiches we have on the menu. This task must be contained in a function because we intend to use it more than once.

The waitress must enter the name of the sandwich that a customer has ordered and receive the price of the sandwich. We could do this using the following code:

Let’s run our program and see what happens:

In the first line of code we declare the name of the sandwich for which we want to know the price. In this case, our sandwich Python variable stores the value ham and cheese.

Next, we declare a function called calculate_price () which takes one parameter: the name of the sandwich the customer wants to buy. We used the Python if statements to check the product name against our list of sandwiches. When the product name is found, our program returns the price it has set.

Here are the potential Python floating point values ‚Äã‚Äã that our program may return:

On the last line, we call our calculate_price () and pass the sandwich variable as an argument. When our calculate_price () method is called, our program executes the method and returns the price of the sandwich we specified.

In this case, the sandwich our client ordered is Ham and cheese, so our schedule returns 2.50.

As soon as the return statement is executed, our function stops and our program continues to execute.

Return Python: another example

Let’s use another example of the instruction return ent to illustrate how it works. Suppose we create a program that calculates the change due to a customer. We could do this using the following code:

Our code returns:

We have declared a function called calculate_change which subtracts the price of the sandwich from the amount given by the customer. In this case, the price of the sandwich is $ 2.50 and the user gave the waitress $ 4.00. So our program returns $ 1.50.

Conclusion

The return keyword in Python exits a function and tells Python to run the rest of the main program. A return keyword can return a value to the main program.

Although the values ‚Äã‚Äãmay have been set in a function, you can return them to your main program and read them in your code.

In this tutorial, we went into the basics of Python’s return statement. We also looked at two examples of Python functions that used the return keyword to demonstrate how the statement works.

For courses, learning resources, and more information on Python, see our Complete Guide to Learn Python .

👻 Read also: what is the best laptop for engineering students?

We hope this article has helped you to resolve the problem. Apart from What Does It Return In Javascript?, check other __main__ Python module-related topics.

Want to excel in Python? See our review of the best Python online courses 2023. If you are interested in Data Science, check also how to learn programming in R.

By the way, this material is also available in other languages:



Xu Wu

Berlin | 2023-02-02

Maybe there are another answers? What What Does It Return In Javascript? exactly means?. Will use it in my bachelor thesis

Manuel Schteiner

London | 2023-02-02

string Python module is always a bit confusing 😭 What Does It Return In Javascript? is not the only problem I encountered. I am just not quite sure it is the best method

Dmitry Jackson

Warsaw | 2023-02-02

I was preparing for my coding interview, thanks for clarifying this - What Does It Return In Javascript? in Python is not the simplest one. Checked yesterday, it works!

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