false nonlocal binding error for `__class__`

[youknowone]

Feature

class A:
    def f(self):
        nonlocal __class__
        __class__ = int

This is legal code in Python but raising error in RustPython:

SyntaxError: no binding for nonlocal '__class__' found at line 0 column 0

Python Documentation

[BolunThompson]

How are you getting that? An error is being raised for me in Python.

Python 3.8.3 (default, May 17 2020, 18:15:42)
[GCC 10.1.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> def f():
...     nonlocal x
...     x = 10
...
  File "<stdin>", line 2
SyntaxError: no binding for nonlocal 'x' found

[youknowone]

I am sorry, I revised the code.

[youknowone]

I think this is solved by #2190