Hello. I wrote this code but can’t figure out how to create my desired output. It should output on of the following two statements;
“Hello Harry” or “Bye Bob”
Instead however, I cant seem to properly change the “Boy” variable for the correct output.
Please advise, Thank you
Here’s my code:
Since Boy is declared as a global, it can only be seen, but not mutated by a function, unless… It is declared locally as a global.
def ...:
global Boy
Aside
Naming convention would have us only use capitalization to denote a CLASS, not an ordinary variable.
class Boy:
vs.
boy = 0Okay, thank you. I think I understand. But then how do i change the variable “boy” into a changeable function in this situation?
boy is just a variable representing an integer value. Once declared as a global inside the function you will be able to mutate it. There is no need to return it since the global will have changed (unless X is 5).
Again, to reiterate, use lowercase variable names unless they represent a class, class Boy: or a global constant, PI = math.pi.
One other point. You haven’t attempted to mutate Boy. Boy + 9 doesn’t change the value of Boy. 
It doesn’t? And here I thought I only had one issue in the code.
Ah! +=
That made it work! Thank you! Plus global.
Thanks guys!!! 
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