Python Docs All functions return a value when called. If a return statement is followed by an expression list, that expression list is evaluated and the value is returned: ...

The Python return statement can show up anywhere in a function body; it ends the function call and sends a result back to the caller. The return statement consists of an object expression that gives ...

The one place they are pretty convenient is in languages (like Python) where multiple return values from one function can be used as multiple input parameters to another.