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pylint 2.16 fails on python 3.8.16 #8161

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andy-fox-rozettatech opened this issue Feb 2, 2023 · 7 comments · Fixed by #8163
Closed

pylint 2.16 fails on python 3.8.16 #8161

andy-fox-rozettatech opened this issue Feb 2, 2023 · 7 comments · Fixed by #8163
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Crash 💥 A bug that makes pylint crash
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@andy-fox-rozettatech
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Bug description

pytlint fails itself on python 3.8.
3.9 and above seem OK

packages/pylint/checkers/imports.py", line 179, in _make_tree_defs
node[1] += files
TypeError: 'tuple' object does not support item assignment

Configuration

github actions (or elsewhere)
python 3.8.16

Collecting pylint
  Downloading pylint-2.16.0-py3-none-any.whl (530 kB)

Command used

pylint

Pylint output

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.8.16/x64/bin/pylint", line 8, in <module>
    sys.exit(run_pylint())
  File "/opt/hostedtoolcache/Python/3.8.16/x64/lib/python3.8/site-packages/pylint/__init__.py", line 36, in run_pylint
    PylintRun(argv or sys.argv[1:])
  File "/opt/hostedtoolcache/Python/3.8.16/x64/lib/python3.8/site-packages/pylint/lint/run.py", line 214, in __init__
    score_value = linter.generate_reports()
  File "/opt/hostedtoolcache/Python/3.8.16/x64/lib/python3.8/site-packages/pylint/lint/pylinter.py", line 1149, in generate_reports
    sect = self.make_reports(self.stats, previous_stats)
  File "/opt/hostedtoolcache/Python/3.8.16/x64/lib/python3.8/site-packages/pylint/reporters/reports_handler_mix_in.py", line 76, in make_reports
    r_cb(report_sect, stats, old_stats)
  File "/opt/hostedtoolcache/Python/3.8.16/x64/lib/python3.8/site-packages/pylint/checkers/imports.py", line 981, in _report_external_dependencies
    dep_info = _make_tree_defs(self._external_dependencies_info().items())
  File "/opt/hostedtoolcache/Python/3.8.16/x64/lib/python3.8/site-packages/pylint/checkers/imports.py", line 179, in _make_tree_defs
    node[1] += files
TypeError: 'tuple' object does not support item assignment

Expected behavior

Not to fail ...

Pylint version

pylint 2.16.0

OS / Environment

ubuntu-latest on github actions

but also MacOS 13.2 etc

Additional dependencies

N/A

@andy-fox-rozettatech andy-fox-rozettatech added the Needs triage 📥 Just created, needs acknowledgment, triage, and proper labelling label Feb 2, 2023
@Pierre-Sassoulas Pierre-Sassoulas added Crash 💥 A bug that makes pylint crash Needs investigation 🔬 A bug or crash where it's not immediately obvious what is happenning and removed Needs triage 📥 Just created, needs acknowledgment, triage, and proper labelling labels Feb 2, 2023
@Pierre-Sassoulas Pierre-Sassoulas added this to the 2.16.1 milestone Feb 2, 2023
@Pierre-Sassoulas
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Thank you for opening the issue. Can you provide any information about the code pylint was run on when it crashed ?

@peanutsven
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Same here for python 3.7.3,

@DanielNoord
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@mschmitzer
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mschmitzer commented Feb 2, 2023

How can node[1] be a tuple?

The problem is node being a tuple. The += is effectively turned into

tmp = node[1]
tmp += files
node[1] = tmp

and assigning the tuple item does not work.
The code was changed here , released in 2.16.

EDIT: Replacing the offending code with node[1].extend(files) would probably fix this.

@DanielNoord
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Yeah that should fix it. Are you able to provide a patch/PR?

Pierre-Sassoulas added a commit to Pierre-Sassoulas/pylint that referenced this issue Feb 2, 2023
Pierre-Sassoulas added a commit to Pierre-Sassoulas/pylint that referenced this issue Feb 2, 2023
Pierre-Sassoulas added a commit that referenced this issue Feb 2, 2023
github-actions bot pushed a commit that referenced this issue Feb 2, 2023
Closes #8161

Co-authored-by: Marc Schmitzer <[email protected]>
(cherry picked from commit 4689b19)
@Pierre-Sassoulas Pierre-Sassoulas removed the Needs investigation 🔬 A bug or crash where it's not immediately obvious what is happenning label Feb 2, 2023
@Pierre-Sassoulas
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If someone has a reproducer this would still be appreciated as this part of the code is not tested properly right now.

Pierre-Sassoulas added a commit that referenced this issue Feb 2, 2023
Closes #8161

Co-authored-by: Marc Schmitzer <[email protected]>
(cherry picked from commit 4689b19)

Co-authored-by: Pierre Sassoulas <[email protected]>
@mschmitzer
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mschmitzer commented Feb 2, 2023

If someone has a reproducer this would still be appreciated as this part of the code is not tested properly right now.

I found one. Interestingly, this does not seem related to the interpreter version, but hashseed dependant:

$ mkvirtualenv test
created virtual environment CPython3.10.6.final.0-64 in 53ms
...
$ pip install pylint
...
Successfully installed astroid-2.14.1 dill-0.3.6 isort-5.12.0 lazy-object-proxy-1.9.0 mccabe-0.7.0 platformdirs-2.6.2 pylint-2.16.0 tomli-2.0.1 tomlkit-0.11.6 typing-extensions-4.4.0 wrapt-1.14.1
$ touch bar.py
$ echo 'import bar' >foo.py
$ PYTHONHASHSEED='3172416510' pylint --rcfile /dev/null -r y foo.py
************* Module foo
foo.py:1:0: C0114: Missing module docstring (missing-module-docstring)
foo.py:1:0: C0104: Disallowed name "foo" (disallowed-name)
foo.py:1:0: W0611: Unused import bar (unused-import)
Traceback (most recent call last):
  File "/home/marc/.venv/test/bin/pylint", line 8, in <module>
    sys.exit(run_pylint())
  File "/home/marc/.venv/test/lib/python3.10/site-packages/pylint/__init__.py", line 36, in run_pylint
    PylintRun(argv or sys.argv[1:])
  File "/home/marc/.venv/test/lib/python3.10/site-packages/pylint/lint/run.py", line 214, in __init__
    score_value = linter.generate_reports()
  File "/home/marc/.venv/test/lib/python3.10/site-packages/pylint/lint/pylinter.py", line 1149, in generate_reports
    sect = self.make_reports(self.stats, previous_stats)
  File "/home/marc/.venv/test/lib/python3.10/site-packages/pylint/reporters/reports_handler_mix_in.py", line 76, in make_reports
    r_cb(report_sect, stats, old_stats)
  File "/home/marc/.venv/test/lib/python3.10/site-packages/pylint/checkers/imports.py", line 981, in _report_external_dependencies
    dep_info = _make_tree_defs(self._external_dependencies_info().items())
  File "/home/marc/.venv/test/lib/python3.10/site-packages/pylint/checkers/imports.py", line 179, in _make_tree_defs
    node[1] += files
TypeError: 'tuple' object does not support item assignment

EDIT: Sorry, I fixed up the example to include the --rcfile /dev/null but didn't adapt the output. Fixed now.

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