PyPI / mypy-extensions / 1.1.0

mypy-extensions 1.1.0

Source

https://github.com/python/mypy_extensions

Tag scanned

1.1.0

Compared with

1.0.0 (0 signals introduced since)

Files

3 scanned, 3 skipped (binary, oversized, or unrecognised)

Signals

0 critical · 0 warn · 2 info

Scan time

2.5 s

LLM review

Reviewed by claude-haiku-5-5 (Anthropic): 2 of 2 warn and critical signals; 2 demoted to info.

Disclude version

4.1.0

Scanned (UTC)

2026-10-22 01:49

Signals

Ordered by severity, then signals introduced in this release. Hidden characters are shown as ⟨U+…⟩.

1. info warn → info by review frame-introspection mypy_extensions.py:18:12

   `sys._getframe` — call-stack frame introspection (ast pass, confidence 0.70)

       try:
           if sys._getframe(1).f_globals['__name__'] not in ['abc', 'functools', 'typing']:
               # Typed dicts are only for static structural subtyping.
               raise TypeError('TypedDict does not support instance and class checks')

   likely benign LLM, confidence 0.95 Frame introspection in the mypy_extensions TypedDict metaclass to block instance and class checks.

   Reasoning

   This is the standard mypy_extensions TypedDict metaclass check. It uses sys._getframe to verify the caller module for a legitimate reason: rejecting isinstance/issubclass checks on TypedDict. No obfuscation or malicious behavior is present.

2. info warn → info by review frame-introspection mypy_extensions.py:41:28

   `sys._getframe` — call-stack frame introspection (ast pass, confidence 0.70)

           # Setting correct module is necessary to make typed dict classes pickleable.
           ns['__module__'] = sys._getframe(1).f_globals.get('__name__', '__main__')
       except (AttributeError, ValueError):
           pass

   likely benign LLM, confidence 0.95 Reads the caller's module name via sys._getframe to set __module__ for pickleable TypedDict classes.

   Reasoning

   This sets the __module__ attribute of generated TypedDict classes from the caller's frame so they can be pickled. It is a well-known, benign library idiom, wrapped in a try/except for platforms without frame support.

Reproduce This Scan

Run disclude locally to verify. Add --format sarif for SARIF output. Add --llm (with an API key in the environment) to include the LLM review.

cargo install disclude --version 4.1.0
git clone https://github.com/python/mypy_extensions mypy_extensions && cd mypy_extensions
git checkout 1.1.0
disclude scan --severity info --diff 1.0.0 .