Python error "UnboundLocalError: local variable 'x' referenced before assignment"

Question

I have the following code:

x = 10

def foo():
print(x)
x += 1

It gives me the following error:

UnboundLocalError: local variable 'x' referenced before assignment

Answer 1

You get this error because when you make an assignment in scope, that variable becomes local to that scope and shadows any other variable with a similar name in the outer scope. 

x = 10
    def bar():
        print(x)

This should work fine