Those aren’t “other errors”, they’re an attempt to explain what is currently happening in your code.
You need to decide if you’re going to be using a global variable or not. If you are, then the variable has to be assigned in global scope. (Either outside any function, or in a function where it’s declared global).
It may not need to be a global if the only other place it is used is in play(). My recommendation is to
- Remove the nested function definitions. They’re not making your code clearer.
- Remove
turnfrom play(). Put that logic elsewhere. Now play() doesn’t need to modify it and you don’t have to make it a global variable.