I have no idea what this error even is


#1

the error is: File “python”, line 18
SyntaxError: ‘return’ outside function

I have no idea what this means, but i have tried moving my return and nothing works. SOMEONE HELP. I have been stuck for over an hour.

def rental_car_cost(days):
        cost = days * 40
if days >= 7:
        cost -= 50
elif days >= 3:
        cost -= 20
        return rental_car_cost(days)


#2

The return is returning the value you’ve calculated in the function. You assigned that value to a variable named cost. Right? Therefore, you want to return the cost.

Using your code and making sure that everything is indented, it would be like this:

def rental_car_cost(days):
    cost = days * 40
    
    if days >= 7:
        cost -= 50
    elif days >= 3:
        cost -= 20
    
    return cost

#3

In PYTHON

indentation is VERY IMPORTANT

=========================================
Using your code the PYTHON interpreter would see

def rental_car_cost(days):
        cost = days * 40
#==end-of-function-definition-is-reached==

#==a-standalone-IF-ELIF-is-started==
if days >= 7:
        cost -= 50
elif days >= 3:
        cost -= 20
        #==the-following-RETURN-is-seen-as-being-part-of-the-ELIF==
        #==and-the-RETURN-is-outside-of-a-FUNCTION, therefor-invalid==
        return rental_car_cost(days)

Normally you would use 4-SPACES per identation-level
so your code should have been

def rental_car_cost(days):
    cost = days * 40
    if days >= 7:
        cost -= 50
    elif days >= 3:
        cost -= 20
    #now you want to RETURN the VALUE of resulting-COST
    return cost
#End-of-FUNCTION-is-reached==

#You may want to CALL the FUNCTION
print rental_car_cost(10)

https://docs.python.org/2/tutorial/inputoutput.html

=====================================================
+++ function talk
Please read the Function talk
and concentrate on

  • parameter
  • argument
  • calling a function
  • usage of the return statement

the FUNCTION talk

def myFunc( param1, param2):
    # Begin of =myFunc= FUNCTION-BODY
    # this =myFunc= function- has 2 PARAMETERS param1 and param2
    # param1 and param2 PARAMETERS are used 
    # as -local- VARIABLES throughout the =myFunc= FUNCTION-BODY
    print( param1 + " and " + param2 )
    #End of =myFunc= FUNCTION-BODY

If you want to call/execute the myFunc function
you will have to add a pair of parentheses to myFunc
like
myFunc()
As the myFunc function was defined
as having 2 parameters
you have to provide 2 arguments
in our case 2 string VALUES “Alena” and "Lauren"
like
myFunc(“Alena”,“Lauren”)

some quotes from the outer-world:

argument is the value/variable/reference being passed in,
parameter is the receiving variable used within the function/block

OR

“parameters” are called “formal parameters”,
while “arguments” are called “actual parameters”.

+++++++++++++++++++++++++++++++++++++++++++++++
++++ function with 1 parameter using return-statement ++

def myFunction( param1 ):
    # //Begin of =myFunction= FUNCTION-BODY
    # //=myFunction= function has 1 PARAMETER param1
    # //this param1 PARAMETER is used as a -local- VARIABLE
    # //throughout the =myFunction= FUNCTION-BODY
    return param1;
    # //End of FUNCTION-BODY

You have defined a myFunction function
which takes 1 parameter param1
this param1 parameter is used
as a variable throughout the =myFunction= FUNCTION-BODY.

If you want to call/execute this myFunction function
and this myFunction function was defined
as having 1 parameter param1
you will have to provide 1 argument
in our case a “number VALUE” 4
myFunction( 4 )

some quotes from the outer-world:

argument is the value/variable/reference being passed in,
parameter is the receiving variable used within the function/block

OR

“parameters” are called “formal parameters”,
while “arguments” are called “actual parameters”.

============================================

As you are using the return-statement in your myFunction function
you will only get a return-value no-display.
You can however capture this return-value in a variable
and then use the print-method to do a display.

theResult = myFunction( 4 )
print theResult

OR directly

print myFunction( 4 )

#4

oh my goodness. I feel so dumb! I felt like I tried it so many times, but clearly I didn’t do it that way. Thank you so much.


#5

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