[Backport maintenance/2.17.x] Fix crash in refactoring checker from unaryop with variable #9076
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Fixes:
```
File "python3.10/site-packages/pylint/utils/ast_walker.py", line 91, in walk
callback(astroid)
File "python3.10/site-packages/pylint/checkers/refactoring/refactoring_checker.py", line 700, in visit_for
self._check_unnecessary_list_index_lookup(node)
File "python3.10/site-packages/pylint/checkers/refactoring/refactoring_checker.py", line 2227, in _check_unnecessary_list_index_lookup
has_start_arg, confidence = self._enumerate_with_start(node)
File "python3.10/site-packages/pylint/checkers/refactoring/refactoring_checker.py", line 2352, in _enumerate_with_start
start_val, confidence = self._get_start_value(keyword.value)
File "python3.10/site-packages/pylint/checkers/refactoring/refactoring_checker.py", line 2369, in _get_start_value
return node.operand.value, HIGH
AttributeError: 'Name' object has no attribute 'value'
```
Crash is reproducible if you have something like this:
```python
x=5
for _ in enumerate(range, start=-x):
...
```
As a workaround, remove the unary op before `for` loop (i.e. change the
variable used).
Closes #9074
Co-authored-by: Hashem Nasarat <hashem@hudson-trading.com>
(cherry picked from commit aa29201)
Pierre-Sassoulas
approved these changes
Sep 27, 2023
Codecov Report
Additional details and impacted files@@ Coverage Diff @@
## maintenance/2.17.x #9076 +/- ##
===================================================
Coverage 95.57% 95.57%
===================================================
Files 178 178
Lines 18869 18869
===================================================
Hits 18034 18034
Misses 835 835
|
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Backport aa29201 from #9075.