[Tut] Return Keyword in Python – A Simple Illustrated Guide

[Tut] Return Keyword in Python – A Simple Illustrated Guide - Printable Version

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[Tut] Return Keyword in Python – A Simple Illustrated Guide - xSicKxBot - 03-21-2022

Return Keyword in Python – A Simple Illustrated Guide

[Image: return-1-1024x576.jpg]

Python’s

Code:
return

keyword commands the execution flow to exit a function immediately and return a value to the caller of the function. You can specify an optional return value—or even a return expression—after the

Code:
return

keyword. If you don’t provide a return value, Python will return the default value

Code:
None

to the caller.

Python Return Keyword Video

Return Keyword Followed by Return Value

Here’s an example of the return keyword in combination with a return value:

Code:
def f(): return 4 print(f())
# OUTPUT: 4

Within function

Code:
f()

, Python returns the result 4 to the caller. The

Code:
print()

function then prints the output to the shell.

Return Keyword Followed by Return Expression

Here’s an example of the return keyword in combination with a return expression:

Code:
def f(): return 2+2 print(f())
# OUTPUT: 4

Within function

Code:
f()

, Python evaluates the expression

Code:
2+2=4

and returns the result 4 to the caller. The

Code:
print()

function then prints the output to the shell.

Return Keyword Followed by No Value

Here’s an example of the return keyword without defining a return value:

Code:
def f(): return print(f())
# OUTPUT: None

Within function

Code:
f()

, Python returns the default value

Code:
None

to the caller. The

Code:
print()

function then prints the output to the shell.

Interactive Code Shell

Run the following code in your browser:

https://trinket.io/embed/python/e0d733e100

Exercise: Change the three return values to 42, 42, and ‘Alice’ in the interactive code shell!

The post Return Keyword in Python – A Simple Illustrated Guide first appeared on Finxter.