New submission from MisterY <cloud2...@gmail.com>:
When I try to format a code snippet with yapf, there comes a error.
It seems lib2to3 can't reconised SLASH.
echo "def foo(posonly1, posonly2, /, positional_or_keyword): pass" | yapf
Traceback (most recent call last):
File "d:\program
files\python38\lib\site-packages\yapf\yapflib\pytree_utils.py", line 115, in
ParseCodeToTree
tree = parser_driver.parse_string(code, debug=False)
File "d:\program files\python38\lib\lib2to3\pgen2\driver.py", line 103, in
parse_string
return self.parse_tokens(tokens, debug)
File "d:\program files\python38\lib\lib2to3\pgen2\driver.py", line 71, in
parse_tokens
if p.addtoken(type, value, (prefix, start)):
File "d:\program files\python38\lib\lib2to3\pgen2\parse.py", line 162, in
addtoken
raise ParseError("bad input", type, value, context)
lib2to3.pgen2.parse.ParseError: bad input: type=17, value='/', context=(' ',
(1, 28))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "d:\program files\python38\lib\runpy.py", line 194, in
_run_module_as_main
return _run_code(code, main_globals, None,
File "d:\program files\python38\lib\runpy.py", line 87, in _run_code
exec(code, run_globals)
File "D:\Program Files\Python38\Scripts\yapf.exe\__main__.py", line 7, in
<module>
File "d:\program files\python38\lib\site-packages\yapf\__init__.py", line
362, in run_main
sys.exit(main(sys.argv))
File "d:\program files\python38\lib\site-packages\yapf\__init__.py", line
104, in main
reformatted_source, _ = yapf_api.FormatCode(
File "d:\program files\python38\lib\site-packages\yapf\yapflib\yapf_api.py",
line 147, in FormatCode
tree = pytree_utils.ParseCodeToTree(unformatted_source)
File "d:\program
files\python38\lib\site-packages\yapf\yapflib\pytree_utils.py", line 121, in
ParseCodeToTree
tree = parser_driver.parse_string(code, debug=False)
File "d:\program files\python38\lib\lib2to3\pgen2\driver.py", line 103, in
parse_string
return self.parse_tokens(tokens, debug)
File "d:\program files\python38\lib\lib2to3\pgen2\driver.py", line 71, in
parse_tokens
if p.addtoken(type, value, (prefix, start)):
File "d:\program files\python38\lib\lib2to3\pgen2\parse.py", line 162, in
addtoken
raise ParseError("bad input", type, value, context)
lib2to3.pgen2.parse.ParseError: bad input: type=17, value='/', context=(' ',
(1, 28))
----------
components: 2to3 (2.x to 3.x conversion tool)
messages: 392396
nosy: cloud-yu
priority: normal
severity: normal
status: open
title: lib2to3 fails on a slash('/') after positional_only paramter in a
function signature
type: behavior
versions: Python 3.8
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue43985>
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