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Pydantic v2 BaseModel: false missing-argument errors for ClassVars in __init__

pydanticIssues related to support for PydanticIssues related to support for Pydantic

Status: Open.

#2956 In facebook/pyrefly;

· arikon opened on Mar 28, 2026

Bizarre missing-attribute false positive for a class with __slots__

googleissues from googleissues from google

typechecking

Status: Open.

#2950 In facebook/pyrefly;

· superbobry opened on Mar 27, 2026

Document symbol search not working on helix

language-serverIssues specific to our IDE integration rather than type checkingIssues specific to our IDE integration rather than type checking

needs-triage

Status: Open.

#2945 In facebook/pyrefly;

· yangdanny97 opened on Mar 27, 2026

Pydantic alias_generator

pydanticIssues related to support for PydanticIssues related to support for Pydantic

Status: Open.

#2942 In facebook/pyrefly;

· nniccolb opened on Mar 27, 2026

Suppressions don't work with backslash line continuations

Status: Open.

Bug

#2935 In facebook/pyrefly;

· maggiemoss opened on Mar 26, 2026

match-case: false positive [unbound-name]

typechecking

Status: Open.

#2932 In facebook/pyrefly;

· randolf-scholz opened on Mar 26, 2026

del in dead code should make variable local

typechecking

Status: Open.

Bug

#2930 In facebook/pyrefly;

· lolpack opened on Mar 26, 2026

Conditionally defined class member not detected

needs-discussionAn issue where it's not clear whether there is a bug or we are behaving as expected.An issue where it's not clear whether there is a bug or we are behaving as expected.

typechecking

Status: Open.

Feature

#2929 In facebook/pyrefly;

· lolpack opened on Mar 26, 2026

Too many values when unpacking a string literal

typechecking

Status: Open.

Feature

#2928 In facebook/pyrefly;

· lolpack opened on Mar 26, 2026

Too few values when unpacking a single-char string

typechecking

Status: Open.

Feature

#2927 In facebook/pyrefly;

· lolpack opened on Mar 26, 2026

Calling abstract classmethod directly on the class

needs-discussionAn issue where it's not clear whether there is a bug or we are behaving as expected.An issue where it's not clear whether there is a bug or we are behaving as expected.

typechecking

Status: Open.

Feature

#2926 In facebook/pyrefly;

· lolpack opened on Mar 26, 2026

Ambiguous protocol member with value assignment

typechecking

Status: Open.

Feature

#2925 In facebook/pyrefly;

· lolpack opened on Mar 26, 2026