Comments (4)
The new asttokens.ASTText
class now supports nodes inside f-strings for Python 3.9.7+ with the .get_text*
methods. But there's still no token information.
from asttokens.
@LiraNuna thanks for keeping this issue open and for the explanations in #4 about what's going on
The original Python issue 29051 was split into two - and the first one https://bugs.python.org/issue30465 "FormattedValue expressions have wrong lineno and col_offset information" is now resolved. Does this mean that this bug can be solved properly now?
For reference, I'm about to wire in a work around to fix this here: jamescooke/flake8-aaa#101 - probably something to prevent the error being raised when the linter tries to access the token information on an f-string.
from asttokens.
It's been a while and I have to admit I forgot most of the details.
from asttokens.
I'm not really up for a PR right now, but here's an idea for an algorithm:
- Get the range of tokens (string literals) representing the JoinedString
- For each FormattedValue (iterating through the string tokens in parallel):
- Find the starting
{
in the current string token. - Determine which character is the end of the main expression:
}
,!
, or:
, based on the conversion and format specifier values in the node. - For each such character after the starting position:
- Try parsing the text between start and end.
- If successful, compare the resulting tree to the FormattedValue tree.
- If equal, mark tokens on the subtree, then readjust positions based on the starting position of the string.
- Repeat for format specifier if present.
- Find the starting
from asttokens.
Related Issues (20)
- DeprecationWarning: The 'astroid.node_classes' module is deprecated HOT 5
- ASTText astroid support HOT 1
- IndexError in asttokens.ASTTokens HOT 2
- Timelines around support for legacy Python HOT 2
- Replace deprecated imp module with importlib HOT 2
- xonsh shell tree HOT 8
- Get node from token? HOT 2
- Official support for 3.9 and maybe 3.10
- 2.0.5 tag missing HOT 2
- Test failure with py3.8 and astroid-2.6+: tests/test_astroid.py::TestAstroid::test_slices - AssertionError: Items in the first set but not the second: HOT 3
- Comma misannotation bug HOT 2
- Fix travis build
- Test new syntax in 3.10 HOT 2
- 2.0.5: pytest is failing in few `astroid` units HOT 15
- `asttokens` 2.0.6 has undeclared dependency on `astroid` HOT 8
- Followup to astroid import fix
- mypy reports `error: Name "asttokens.ASTTokens" is not defined` HOT 4
- Support for constructing around a list of existing tokens HOT 6
- Docs outdated HOT 3
- Consider a clearer optional-functionality API HOT 15
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from asttokens.