Python, Functions changing values

Question

So I am having trouble getting this system to work, and I can\'t be sure that I\'m asking the right question, but here is what is happening and what I want to happen.

Answer 1

money + 2 is a no-op. You actually have to assign money to a new value

money = money + 2
# or
money += 2

But then you'll find you get an error - you can't assign to variables outside a function scope. You can use the global keyword:

global money
money += 2

This will allow you to change the value of money within the function.

However, the recommended way is passing money as a parameter:

def gainM(money):
    money += 2
    Stats()
    return money

if money == 1:
    money = gainM(money)

If you're using the second option (which you should be), you also need to change your Stats function, to have a money parameter as well.

def Stats(money):
     print
     print "money " + str(money)

Otherwise the function will print 1 instead of 3.

Another recommendation - use string formatting.

'money %d' % money  # the old way
'money {}'.format(money)  # the new and recommended way

Now you pass money into the Stats function.

def gainM(money):
    money += 2
    Stats(money)
    return money