Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Refactoring checker crashes when unary operator used with variable #9074

Closed
Hnasar opened this issue Sep 26, 2023 · 0 comments · Fixed by #9075 or #9093
Closed

Refactoring checker crashes when unary operator used with variable #9074

Hnasar opened this issue Sep 26, 2023 · 0 comments · Fixed by #9075 or #9093
Labels
Crash 💥 A bug that makes pylint crash
Milestone
2.17.7

Comments

@Hnasar
Copy link
Contributor

Hnasar commented Sep 26, 2023 •
edited
Loading

Bug description

"""Regression test."""
def crash_on_unary_op_with_name():
    """Should not crash with -idx."""
    mylist = []
    idx = 5
    for _i, _val in enumerate(mylist, start=-idx):
        pass

Configuration

No response

Command used

pylint file.py

Pylint output

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'

Expected behavior

no crash

Pylint version

python3.10 -- latest version of pylint maintenance branch

OS / Environment

No response

Additional dependencies

No response
@Hnasar Hnasar added the Needs triage 📥 Just created, needs acknowledgment, triage, and proper labelling label Sep 26, 2023
Hnasar added a commit to Hnasar/pylint that referenced this issue Sep 26, 2023
@Hnasar
Fix crash in refactoring checker from unaryop with variable
8e14344 
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 pylint-dev#9074
@Hnasar Hnasar mentioned this issue Sep 26, 2023
Merged
Hnasar added a commit to Hnasar/pylint that referenced this issue Sep 26, 2023
@Hnasar
Fix crash in refactoring checker from unaryop with variable
ab3e0f1 
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 pylint-dev#9074
Pierre-Sassoulas pushed a commit that referenced this issue Sep 27, 2023
@Hnasar
Fix crash in refactoring checker from unaryop with variable (#9075)
aa29201 
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 <[email protected]>
github-actions bot pushed a commit that referenced this issue Sep 27, 2023
@Hnasar @github-actions
Fix crash in refactoring checker from unaryop with variable (#9075)
7bd258b 
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 <[email protected]>
(cherry picked from commit aa29201)
@Pierre-Sassoulas Pierre-Sassoulas added Crash 💥 A bug that makes pylint crash and removed Needs triage 📥 Just created, needs acknowledgment, triage, and proper labelling labels Sep 27, 2023
@Pierre-Sassoulas Pierre-Sassoulas added this to the 2.17.7 milestone Sep 27, 2023
Pierre-Sassoulas pushed a commit that referenced this issue Sep 27, 2023
@github-actions @Hnasar
Fix crash in refactoring checker from unaryop with variable (#9075) (#…
aed51a6 
…9076)

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 <[email protected]>
(cherry picked from commit aa29201)

Co-authored-by: Nazia Povey <[email protected]>
@nickdrozd nickdrozd mentioned this issue Sep 28, 2023
Closed
This was referenced Sep 30, 2023
Merged
Merged
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
Crash 💥 A bug that makes pylint crash
Projects
None yet
Milestone
2.17.7
2 participants
@Hnasar @Pierre-Sassoulas