Returning Data

Returning Data

• 1.
  FUNCTION RETURNS
• 2.
  THE RETURN STATEMENT •Used to end execution of a function • Can be placed anywhere in a function • Statements that follow the return statement will not be executed • Can be used to prevent abnormal termination of an application • A function can return a value or expression back to the statement that called the function. • Ex. • x = random.random() • val = math.sqrt(16) • In a function that returns a value, the return statement can be used to return a value from the function to the point of call. • assign it to a variable • send it to print • use it in an expression
• 3.
  DECLARING A RETURNFUNCTION • Code: Declaring a Basic Function: def functionName (): Function Body return valueToReturn • Question: What do you believe will happen if write a return statement with no return value? • Question: What concept does this remind you of?
• 4.
  CALLING A FUNCTION •Functions just like variables need to be called in order to be invoked • Code: Calling a Function: functionName () o Ex. val = rtnFnCall() print(rtnFnCall()) val = rtnFnCall() * 5
• 5.
  FUNCTION WITH RETURNEXAMPLE