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Return Statement

Imagine you ask a friend to go to the store and buy a chocolate bar. They go to the store (the function), buy the chocolate, and then they return to you and give you the chocolate. In Python, the return statement is how a function gives a result back to you instead of just keeping it!

What is the Return Statement?

The return statement is used to send a value from a function back to the main part of your program.

  • The Exit Door: When Python hits a return statement, the function stops immediately.

  • Storage: Unlike print(), which just shows text on the screen, return lets you save the answer in a variable to use later.

  • Versatile: You can return numbers, words, or even lists!

Real-World Return Scenarios

  • Grading System: A function calculates your score and returns "Pass" or "Fail."

  • Shopping App: A function adds up the items in your cart and returns the total bill amount.

  • Login System: When you enter a password, a function returns True if it's correct.

  • Calculator: You send numbers to a function, and it returns the final answer.

How it Looks (Syntax & Examples)

The Pattern:

def function_name():
    return value


Example 1: The Math Result

def add(a, b):
    return a + b

# We save the result of the function in a variable
result = add(5, 3)
print(result)


Output: 8

Example 2: Sending a Message Back

def message():
    return "Welcome"

print(message())


Output: Welcome

Summary:

  • Instant Stop: Nothing written after the return line inside a function will ever run.

  • Smart Programs: Using return makes your functions much more powerful because they can "talk" to the rest of your code.

  • Calculations: Always use return when your function is doing math or making a decision.

Check your knowledge

Quickly verify what you've learned from this tutorial.

Question 1

What does the return statement do in a function?

The return keyword is used to pass a result out of a function and end its execution.

Question 2

What happens to the code written inside a function after a return statement?

Return acts like an exit door; once the computer walks through it, the rest of the function code is skipped.

Question 3

What is the main difference between print() and return?

print() is for humans to see, while return is for the computer to use the data in other parts of the program.

Question 4

Look at this code:

 def check(): 
       return 10; 
print(20).

What is printed?

The function returns 10 and stops before reaching print(20). To see the 10, you must print the function call.

Question 5

Can a Python function return more than one value at a time?

Python allows you to return multiple values (like return a, b), which actually creates a small tuple.

Congratulations!

You've successfully mastered the knowledge check for "Return Statement."

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