the return statements in functions
Let me start with a fact: Every function returns a value when called.
Well, I don’t know about you, but I was surprised to know about it in the first place!
Let’s see an example to prove my point:
Output:
Welcome to my blog post
None
Did you see that?
When I called the function, it has returned the special type None.
The variable post stores it and prints it out in the second line.
Now, we can explicitly return a value from a function by using the return keyword.
return statement
- The return statement includes a
returnkeyword followed by an expression. - An expression is a set of conditions which produces a value.
- So, the return statement can contain an expression or an explicit value to be returned.
- A return statement also ends the function execution. This means that any statements inside a function following the return statement will not be executed.
- Take a note that return statement cannot be used outside a function.
Let’s code a few examples:
1) Single return statement
Output:
21
As you can see in this example, we have given an expression which returns the product of given two numbers.
2) Multiple return statements
Output:
21
3.14
Try again!
Here, an explicit value is specified in multiple return statements.
3) return statement with multiple values
Output:
(21, 63, 210)
This example returns dynamic values in a tuple based on the given argument.
Code along and have fun.
