[Tutor] nonlocal variables

[Vladislav Vorobyov]

#!/usr/bin/python
def func_outer():
        x = 2
        print('x is', x)
        def func_inner():
                nonlocal x
                x = 5
        func_inner()
        print('Changed local x to', x)

func_outer()

Output:
File "nonlocal_var.py", line 6
    nonlocal x
             ^
SyntaxError: invalid syntax
Why? Cannon find in google it.
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