Tests fail with Python 3.12

[s3v-]

Hi,
tests fail with python 3.12.1

$ python3.12 -m pytest test/
==================================================================== test session starts ====================================================================
platform linux -- Python 3.12.1, pytest-7.4.4, pluggy-1.3.0
rootdir: /build/parso
configfile: pytest.ini
collected 1348 items                                                                                                                                        

test/test_cache.py .........                                                                                                                          [  0%]
test/test_diff_parser.py ..................................................................................                                           [  6%]
test/test_dump_tree.py ..........                                                                                                                     [  7%]
test/test_error_recovery.py .............                                                                                                             [  8%]
test/test_file_python_errors.py .....                                                                                                                 [  8%]
test/test_fstring.py .....................................................................                                                            [ 13%]
test/test_get_code.py .............                                                                                                                   [ 14%]
test/test_grammar.py .                                                                                                                                [ 14%]
test/test_load_grammar.py ...........                                                                                                                 [ 15%]
test/test_normalizer_issues_files.py .............................                                                                                    [ 17%]
test/test_old_fast_parser.py ...............                                                                                                          [ 19%]
test/test_param_splitting.py .......                                                                                                                  [ 19%]
test/test_parser.py ................................................................................................................................. [ 29%]
.............                                                                                                                                         [ 30%]
test/test_parser_tree.py ...............................................................................                                              [ 35%]
test/test_pep8.py ...                                                                                                                                 [ 36%]
test/test_pgen2.py .................................................................................................................................. [ 45%]
.............................................................................................................................................         [ 56%]
test/test_prefix.py ......................                                                                                                            [ 57%]
test/test_python_errors.py ...........FF............................................................................................................. [ 66%]
............................F....................F..FFF.....FFFFF.............................................................F...................... [ 78%]
.....................................................................................................................................                 [ 87%]
test/test_tokenize.py ............................................................................................................................... [ 97%]
.                                                                                                                                                     [ 97%]
test/test_utils.py ...................................                                                                                                [100%]

========================================================================= FAILURES ==========================================================================
____________________________________________________ test_python_exception_matches[def f(x=3, y): pass] _____________________________________________________

code = 'def f(x=3, y): pass'

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
        wanted, line_nr = _get_actual_exception(code)
    
        errors = _get_error_list(code)
        actual = None
        if errors:
            error, = errors
            actual = error.message
>       assert actual in wanted
E       AssertionError: assert 'SyntaxError: non-default argument follows default argument' in ['SyntaxError: parameter without a default follows parameter with a default']

test/test_python_errors.py:42: AssertionError
______________________________________________________ test_python_exception_matches[lambda x=3, y: x] ______________________________________________________

code = 'lambda x=3, y: x'

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
        wanted, line_nr = _get_actual_exception(code)
    
        errors = _get_error_list(code)
        actual = None
        if errors:
            error, = errors
            actual = error.message
>       assert actual in wanted
E       AssertionError: assert 'SyntaxError: non-default argument follows default argument' in ['SyntaxError: parameter without a default follows parameter with a default']

test/test_python_errors.py:42: AssertionError
__________________________________________________________ test_python_exception_matches[f"{*x}"] ___________________________________________________________

code = 'f"{*x}"'

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
        wanted, line_nr = _get_actual_exception(code)
    
        errors = _get_error_list(code)
        actual = None
        if errors:
            error, = errors
            actual = error.message
>       assert actual in wanted
E       assert "SyntaxError: f-string: can't use starred expression here" in ["SyntaxError: can't use starred expression here"]

test/test_python_errors.py:42: AssertionError
___________________________________________________________ test_python_exception_matches[f"{}"] ____________________________________________________________

code = 'f"{}"'

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
        wanted, line_nr = _get_actual_exception(code)
    
        errors = _get_error_list(code)
        actual = None
        if errors:
            error, = errors
            actual = error.message
>       assert actual in wanted
E       assert 'SyntaxError: invalid syntax' in ["SyntaxError: f-string: valid expression required before '}'"]

test/test_python_errors.py:42: AssertionError
___________________________________________________________ test_python_exception_matches[f"{#}"] ___________________________________________________________

code = 'f"{#}"'

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
        wanted, line_nr = _get_actual_exception(code)
    
        errors = _get_error_list(code)
        actual = None
        if errors:
            error, = errors
            actual = error.message
>       assert actual in wanted
E       assert 'SyntaxError: invalid syntax' in ["SyntaxError: '{' was never closed"]

test/test_python_errors.py:42: AssertionError
__________________________________________________________ test_python_exception_matches[f'{1!b}'] __________________________________________________________

code = "f'{1!b}'"

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
        wanted, line_nr = _get_actual_exception(code)
    
        errors = _get_error_list(code)
        actual = None
        if errors:
            error, = errors
            actual = error.message
>       assert actual in wanted
E       assert "SyntaxError: f-string: invalid conversion character: expected 's', 'r', or 'a'" in ["SyntaxError: f-string: invalid conversion character 'b': expected 's', 'r', or 'a'"]

test/test_python_errors.py:42: AssertionError
_______________________________________________________ test_python_exception_matches[f'{1:{5:{3}}}'] _______________________________________________________

code = "f'{1:{5:{3}}}'"

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
>       wanted, line_nr = _get_actual_exception(code)

test/test_python_errors.py:35: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

code = "f'{1:{5:{3}}}'"

    def _get_actual_exception(code):
        with warnings.catch_warnings():
            # We don't care about warnings where locals/globals misbehave here.
            # It's as simple as either an error or not.
            warnings.filterwarnings('ignore', category=SyntaxWarning)
            try:
                compile(code, '<unknown>', 'exec')
            except (SyntaxError, IndentationError) as e:
                wanted = e.__class__.__name__ + ': ' + e.msg
                line_nr = e.lineno
            except ValueError as e:
                # The ValueError comes from byte literals in Python 2 like '\x'
                # that are oddly enough not SyntaxErrors.
                wanted = 'SyntaxError: (value error) ' + str(e)
                line_nr = None
            else:
>               assert False, "The piece of code should raise an exception."
E               AssertionError: The piece of code should raise an exception.
E               assert False

test/test_python_errors.py:118: AssertionError
_______________________________________________________ test_python_exception_matches[f'{continue}'] ________________________________________________________

code = "f'{continue}'"

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
        wanted, line_nr = _get_actual_exception(code)
    
        errors = _get_error_list(code)
        actual = None
        if errors:
            error, = errors
            actual = error.message
>       assert actual in wanted
E       assert 'SyntaxError: f-string: invalid syntax' in ["SyntaxError: f-string: expecting a valid expression after '{'"]

test/test_python_errors.py:42: AssertionError
__________________________________________________________ test_python_exception_matches[f'{1;1}'] __________________________________________________________

code = "f'{1;1}'"

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
        wanted, line_nr = _get_actual_exception(code)
    
        errors = _get_error_list(code)
        actual = None
        if errors:
            error, = errors
            actual = error.message
>       assert actual in wanted
E       assert 'SyntaxError: f-string: invalid syntax' in ["SyntaxError: f-string: expecting '=', or '!', or ':', or '}'"]

test/test_python_errors.py:42: AssertionError
__________________________________________________________ test_python_exception_matches[f'{a;}'] ___________________________________________________________

code = "f'{a;}'"

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
        wanted, line_nr = _get_actual_exception(code)
    
        errors = _get_error_list(code)
        actual = None
        if errors:
            error, = errors
            actual = error.message
>       assert actual in wanted
E       assert 'SyntaxError: f-string: invalid syntax' in ["SyntaxError: f-string: expecting '=', or '!', or ':', or '}'"]

test/test_python_errors.py:42: AssertionError
________________________________________________________ test_python_exception_matches[f'{b"" ""}'] _________________________________________________________

code = 'f\'{b"" ""}\''

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
        wanted, line_nr = _get_actual_exception(code)
    
        errors = _get_error_list(code)
        actual = None
        if errors:
            error, = errors
            actual = error.message
>       assert actual in wanted
E       AssertionError: assert 'SyntaxError: f-string: cannot mix bytes and nonbytes literals' in ['SyntaxError: cannot mix bytes and nonbytes literals']

test/test_python_errors.py:42: AssertionError
_________________________________________________________ test_python_exception_matches[f"{'\\n'}"] _________________________________________________________

code = 'f"{\'\\n\'}"'

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
>       wanted, line_nr = _get_actual_exception(code)

test/test_python_errors.py:35: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

code = 'f"{\'\\n\'}"'

    def _get_actual_exception(code):
        with warnings.catch_warnings():
            # We don't care about warnings where locals/globals misbehave here.
            # It's as simple as either an error or not.
            warnings.filterwarnings('ignore', category=SyntaxWarning)
            try:
                compile(code, '<unknown>', 'exec')
            except (SyntaxError, IndentationError) as e:
                wanted = e.__class__.__name__ + ': ' + e.msg
                line_nr = e.lineno
            except ValueError as e:
                # The ValueError comes from byte literals in Python 2 like '\x'
                # that are oddly enough not SyntaxErrors.
                wanted = 'SyntaxError: (value error) ' + str(e)
                line_nr = None
            else:
>               assert False, "The piece of code should raise an exception."
E               AssertionError: The piece of code should raise an exception.
E               assert False

test/test_python_errors.py:118: AssertionError
_________________________________________________________ test_python_exception_matches[f'{1=!b}'] __________________________________________________________

code = "f'{1=!b}'"

    @pytest.mark.parametrize('code', FAILING_EXAMPLES)
    def test_python_exception_matches(code):
        wanted, line_nr = _get_actual_exception(code)
    
        errors = _get_error_list(code)
        actual = None
        if errors:
            error, = errors
            actual = error.message
>       assert actual in wanted
E       assert "SyntaxError: f-string: invalid conversion character: expected 's', 'r', or 'a'" in ["SyntaxError: f-string: invalid conversion character 'b': expected 's', 'r', or 'a'"]

test/test_python_errors.py:42: AssertionError
================================================================== short test summary info ==================================================================
FAILED test/test_python_errors.py::test_python_exception_matches[def f(x=3, y): pass] - AssertionError: assert 'SyntaxError: non-default argument follows default argument' in ['SyntaxError: parameter without a default follows parameter with...
FAILED test/test_python_errors.py::test_python_exception_matches[lambda x=3, y: x] - AssertionError: assert 'SyntaxError: non-default argument follows default argument' in ['SyntaxError: parameter without a default follows parameter with...
FAILED test/test_python_errors.py::test_python_exception_matches[f"{*x}"] - assert "SyntaxError: f-string: can't use starred expression here" in ["SyntaxError: can't use starred expression here"]
FAILED test/test_python_errors.py::test_python_exception_matches[f"{}"] - assert 'SyntaxError: invalid syntax' in ["SyntaxError: f-string: valid expression required before '}'"]
FAILED test/test_python_errors.py::test_python_exception_matches[f"{#}"] - assert 'SyntaxError: invalid syntax' in ["SyntaxError: '{' was never closed"]
FAILED test/test_python_errors.py::test_python_exception_matches[f'{1!b}'] - assert "SyntaxError: f-string: invalid conversion character: expected 's', 'r', or 'a'" in ["SyntaxError: f-string: invalid conversion character 'b': ex...
FAILED test/test_python_errors.py::test_python_exception_matches[f'{1:{5:{3}}}'] - AssertionError: The piece of code should raise an exception.
FAILED test/test_python_errors.py::test_python_exception_matches[f'{continue}'] - assert 'SyntaxError: f-string: invalid syntax' in ["SyntaxError: f-string: expecting a valid expression after '{'"]
FAILED test/test_python_errors.py::test_python_exception_matches[f'{1;1}'] - assert 'SyntaxError: f-string: invalid syntax' in ["SyntaxError: f-string: expecting '=', or '!', or ':', or '}'"]
FAILED test/test_python_errors.py::test_python_exception_matches[f'{a;}'] - assert 'SyntaxError: f-string: invalid syntax' in ["SyntaxError: f-string: expecting '=', or '!', or ':', or '}'"]
FAILED test/test_python_errors.py::test_python_exception_matches[f'{b"" ""}'] - AssertionError: assert 'SyntaxError: f-string: cannot mix bytes and nonbytes literals' in ['SyntaxError: cannot mix bytes and nonbytes literals']
FAILED test/test_python_errors.py::test_python_exception_matches[f"{'\\n'}"] - AssertionError: The piece of code should raise an exception.
FAILED test/test_python_errors.py::test_python_exception_matches[f'{1=!b}'] - assert "SyntaxError: f-string: invalid conversion character: expected 's', 'r', or 'a'" in ["SyntaxError: f-string: invalid conversion character 'b': ex...
============================================================== 13 failed, 1335 passed in 4.08s ==============================================================

Assertion error "The piece of code should raise an exception." is due to Python 3.12 allows backslash in f-strings

PEP 701: Syntactic formalization of f-strings

[PEP 701](https://peps.python.org/pep-0701/) lifts some restrictions on the usage of f-strings.   
Expression components inside f-strings can now be any valid Python expression, including strings reusing the same   
quote as the containing f-string, multi-line expressions, comments, backslashes, and unicode escape sequences.

https://docs.python.org/3/whatsnew/3.12.html

Kind Regards