pyupgrade fails with 3.14.2 (similar as previously seen issue) with TypeError

[kratsg]

#1038 with a fix in #1040 . In pyhf/pyhf-tutorial#115 - we observe uvx pre-commit run -a fail with CPython == 3.14.2 as below:

Run uvx pre-commit run --all-files
  uvx pre-commit run --all-files
  shell: /usr/bin/bash -e {0}
  env:
    pythonLocation: /opt/hostedtoolcache/Python/3.14.2/x64
    PKG_CONFIG_PATH: /opt/hostedtoolcache/Python/3.14.2/x64/lib/pkgconfig
    Python_ROOT_DIR: /opt/hostedtoolcache/Python/3.14.2/x64
    Python2_ROOT_DIR: /opt/hostedtoolcache/Python/3.14.2/x64
    Python3_ROOT_DIR: /opt/hostedtoolcache/Python/3.14.2/x64
    LD_LIBRARY_PATH: /opt/hostedtoolcache/Python/3.14.2/x64/lib
    UV_PYTHON_INSTALL_DIR: /home/runner/work/_temp/uv-python-dir
    UV_CACHE_DIR: /home/runner/work/_temp/setup-uv-cache
Downloading virtualenv (5.7MiB)
 Downloaded virtualenv
Installed 9 packages in 7ms
[INFO] Initializing environment for https://github.com/pre-commit/pre-commit-hooks.
[INFO] Initializing environment for https://github.com/asottile/pyupgrade.
[INFO] Initializing environment for https://github.com/psf/black-pre-commit-mirror.
[INFO] Initializing environment for https://github.com/psf/black-pre-commit-mirror:.[jupyter].
[INFO] Initializing environment for https://github.com/codespell-project/codespell.
[INFO] Initializing environment for https://github.com/nbQA-dev/nbQA.
[INFO] Initializing environment for https://github.com/nbQA-dev/nbQA:pyupgrade==3.14.0.
[INFO] Initializing environment for https://github.com/nbQA-dev/nbQA:isort==5.11.4.
[INFO] Installing environment for https://github.com/pre-commit/pre-commit-hooks.
[INFO] Once installed this environment will be reused.
[INFO] This may take a few minutes...
[INFO] Installing environment for https://github.com/asottile/pyupgrade.
[INFO] Once installed this environment will be reused.
[INFO] This may take a few minutes...
[INFO] Installing environment for https://github.com/psf/black-pre-commit-mirror.
[INFO] Once installed this environment will be reused.
[INFO] This may take a few minutes...
[INFO] Installing environment for https://github.com/codespell-project/codespell.
[INFO] Once installed this environment will be reused.
[INFO] This may take a few minutes...
[INFO] Installing environment for https://github.com/nbQA-dev/nbQA.
[INFO] Once installed this environment will be reused.
[INFO] This may take a few minutes...
[INFO] Installing environment for https://github.com/nbQA-dev/nbQA.
[INFO] Once installed this environment will be reused.
[INFO] This may take a few minutes...
check for added large files..............................................Passed
check for case conflicts.................................................Passed
check for merge conflicts................................................Passed
check for broken symlinks............................(no files to check)Skipped
check json...............................................................Passed
check yaml...............................................................Passed
check toml...............................................................Passed
check xml................................................................Passed
debug statements (python)................................................Passed
fix end of files.........................................................Passed
mixed line ending........................................................Passed
trim trailing whitespace.................................................Passed
pyupgrade................................................................Failed
- hook id: pyupgrade
- exit code: 1

Traceback (most recent call last):
  File "/home/runner/.cache/pre-commit/repobaotte8o/py_env-python3.14/bin/pyupgrade", line 7, in <module>
    sys.exit(main())
             ~~~~^^
  File "/home/runner/.cache/pre-commit/repobaotte8o/py_env-python3.14/lib/python3.14/site-packages/pyupgrade/_main.py", line 393, in main
    ret |= _fix_file(filename, args)
           ~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/home/runner/.cache/pre-commit/repobaotte8o/py_env-python3.14/lib/python3.14/site-packages/pyupgrade/_main.py", line 327, in _fix_file
    contents_text = _fix_tokens(contents_text)
  File "/home/runner/.cache/pre-commit/repobaotte8o/py_env-python3.14/lib/python3.14/site-packages/pyupgrade/_main.py", line 297, in _fix_tokens
    tokenize.cookie_re.match(token.src)
    ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
TypeError: cannot use a bytes pattern on a string-like object

black-jupyter............................................................Passed
codespell................................................................Passed
nbqa-pyupgrade...........................................................Failed
- hook id: nbqa-pyupgrade
- exit code: 1

Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/home/runner/.cache/pre-commit/repob4wkljoj/py_env-python3.14/lib/python3.14/site-packages/pyupgrade/__main__.py", line 6, in <module>
    raise SystemExit(main())
                     ~~~~^^
  File "/home/runner/.cache/pre-commit/repob4wkljoj/py_env-python3.14/lib/python3.14/site-packages/pyupgrade/_main.py", line 385, in main
    ret |= _fix_file(filename, args)
           ~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/home/runner/.cache/pre-commit/repob4wkljoj/py_env-python3.14/lib/python3.14/site-packages/pyupgrade/_main.py", line 327, in _fix_file
    contents_text = _fix_tokens(contents_text)
  File "/home/runner/.cache/pre-commit/repob4wkljoj/py_env-python3.14/lib/python3.14/site-packages/pyupgrade/_main.py", line 297, in _fix_tokens
    tokenize.cookie_re.match(token.src)
    ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
TypeError: cannot use a bytes pattern on a string-like object

nbqa-isort...............................................................Passed
Error: Process completed with exit code 1.

[asottile]

please search for duplicates and always try the latest version