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f-string syntax in Python 3.8 was enhanced

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See e.g. https://twitter.com/raymondh/status/1135253771846471680
This commit is contained in:
Dave Halter
2019-06-02 22:48:47 +02:00
parent 917b4421f3
commit 6cdd47fe2b
3 changed files with 7 additions and 3 deletions
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2
parso/python/grammar38.txt
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@@ -153,5 +153,5 @@ strings: (STRING | fstring)+
fstring: FSTRING_START fstring_content* FSTRING_END fstring: FSTRING_START fstring_content* FSTRING_END
fstring_content: FSTRING_STRING | fstring_expr fstring_content: FSTRING_STRING | fstring_expr
fstring_conversion: '!' NAME fstring_conversion: '!' NAME
fstring_expr: '{' testlist [ fstring_conversion ] [ fstring_format_spec ] '}' fstring_expr: '{' testlist ['='] [ fstring_conversion ] [ fstring_format_spec ] '}'
fstring_format_spec: ':' fstring_content* fstring_format_spec: ':' fstring_content*

2
test/failing_examples.py
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@@ -146,7 +146,7 @@ FAILING_EXAMPLES = [
# Now nested parsing # Now nested parsing
"f'{continue}'", "f'{continue}'",
"f'{1;1}'", "f'{1;1}'",
"f'{a=3}'", "f'{a*=3}'",
"f'{b\"\" \"\"}'", "f'{b\"\" \"\"}'",
] ]

6
test/test_fstring.py
View File

@@ -7,7 +7,7 @@ from parso.python.tokenize import tokenize
@pytest.fixture @pytest.fixture
def grammar(): def grammar():
return load_grammar(version='3.6') return load_grammar(version='3.8')
@pytest.mark.parametrize( @pytest.mark.parametrize(
@@ -31,6 +31,10 @@ def grammar():
'{{{1}', '{{{1}',
'1{{2{{3', '1{{2{{3',
'}}', '}}',
# New Python 3.8 syntax f'{a=}'
'{a=}',
'{a()=}',
] ]
) )
def test_valid(code, grammar): def test_valid(code, grammar):