The code below accepted purely by luck. Could someone please hold me by the hand as it were.
Without return (z), the console gives me "None" and it is accepted.
With return (z) and line 11 not indented I get "18" and "none" on the console..
If line 11 is not indented I get "none"on the console but no "18" and it s accepted,
I shall be very grateful
x = 5 y = 13 # Add add_function here! def add_function(m, n): global x #I gleaned this method from the internet global y #from the internet x=m y=n z= m+n return (z) print add_function(m,n) 18 None