pytest-dev/pytest

Expose FixtureFunctionDefinition as part of the public API

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#14,853 opened on Aug 11, 2026

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 (1 comment) (0 reactions) (1 assignee)Python (2,476 forks)batch import
good first issuetopic: fixtures

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Description

There doesn’t appear to be a public type that can be used to annotate the result of pytest.fixture.

For example, consider a factory which creates fixtures:

from _pytest.fixtures import FixtureFunctionDefinition

def make_fixture(value: str) -> FixtureFunctionDefinition:
    @pytest.fixture
    def fixture() -> str:
        return value
    return fixture

Contributor guide

Research direction
Investigate how pytest defines its public API, locate the definition of FixtureFunctionDefinition, and determine the standard pattern for exposing internal types as public. Look at existing exported types and their documentation.
Tech stack
python
Domain
testingapi
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitPython
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75