A function can return a value to the code that called it. This program returns a value to the code that called it to help perform its task.
We can store the return value in a variable too. Here we store the return value in result and display it in the console.
>>> def aa(age):
... label = "User age: " + age
... return label
...
>>> bb = aa("38")
>>> print(bb)
User age: 38