[Python learning] Little problem who block [SOLVED]


#1

Hello guys :slight_smile:

I try to learn Python and a little problem block me,
When I do this, it's send no error but don't works,
If I write "oui" or "no" it's do the same,
It's send me "None", whitout say me "D'accord, merci du vote !" or something else ^^

print "Voice le vote de la 1er loi : (Ne repondez que avec Oui ou Non)"

Vote_loi1 = raw_input("Etes vous d'accord avec la loi que je propose ?").lower()


def loi1():
    if Vote_loi1 == "oui":
        return "D'accord, merci du vote !"
    elif:
        Argent_demande1 = raw_input("Combien pour votre voix ?").lower()
        if Argent_demande1 < 100:
            return "Nous vous verserons la somme, merci."
        elif Argent_demande1 < 150: 
            return "Nous vous verserons la somme."
        else:
            return "Vous allez être envoyé en prison, =)"

If you have time for help me a little , I don't want to pass to next step if I stay blocked here :stuck_out_tongue:

Thank you :smiley:


#2

This line is in a different scope than the line where the variable is defined.

# global scope

def loi1():
    # local scope

The variable inside the function is not defined. The thing to do would be to pass it to the function when it is called...

print loi1(vote_loi1)

As an aside, convention would have us avoid the use of capitalized variable name since this denotes a Class. A minor concern, but something to learn around.


#3

@atom589

print "Voice le vote de la 1er loi : (Ne repondez que avec Oui ou Non)"

#Vote_loi1 = "oui"
#Vote_loi1 = "no"

raw_input("Etes vous d'accord avec la loi que je propose ?").lower()


def loi1():
    if Vote_loi1 == "oui":
        return "D'accord, merci du vote !"
    else:
        Argent_demande1 = int(raw_input("Combien pour votre voix ?"))
        ##.lower()
        if Argent_demande1 < 100:
            return "Nous vous verserons la somme, merci."
        elif Argent_demande1 < 150: 
            return "Nous vous verserons la somme."
        else:
            return "Vous allez être envoyé en prison, =)"
print loi1()

#4

I better understood thank you :slight_smile:
@mtf thank you :slight_smile:

@leonhard.wettengmx.n
But I don't understand why we need to let Argent_demande1 = 100 , because if we put = 0, it don't works :confused:
And how you write it's don't work if I put "oui", I need to put

in def loi1(): no ?


#5

@atom589
I changed the code....
and here what you need to know about using a function

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 )

#6

Thank you very mutch,
now I understand :slight_smile:

Have a good day / night !