python config_error ai_generated true

ScopeMismatch：您尝试使用会话作用域的请求对象访问函数作用域的 fixture monkeypatch，涉及工厂

ScopeMismatch: You tried to access the function scoped fixture monkeypatch with a session scoped request object, involved factories

ID: python/pytest-monkeypatch-scope-session

其他格式: JSON · Markdown 中文 · English
80%修复率
88%置信度
0证据数
2024-04-26首次发现

版本兼容性

版本状态引入弃用备注
7.x active — — —
8.x active — — —

根因分析

会话作用域的 fixture 请求了 monkeypatch（函数作用域），违反了 pytest 的作用域排序规则。

English

A session-scoped fixture requested monkeypatch (which is function-scoped), violating pytest's scope ordering rules.

generic

解决方案

  1. 95% 成功率 
    @pytest.fixture(scope="session")
def config(): return {"url": "http://x"}

@pytest.fixture
def patched(config, monkeypatch):
    monkeypatch.setitem(config, "url", "http://test")
    return config
  2. 90% 成功率 
    @pytest.fixture(scope="session")
def patched():
    with pytest.MonkeyPatch.context() as mp:
        mp.setenv("X", "1")
        yield

无效尝试

常见但无效的做法:

  1. 60% 失败

    May break expensive setup assumptions and hides the real scope design issue.

  2. 90% 失败

    Does not change scope mismatch behavior.

  3. 85% 失败

    Markers do not alter fixture scope rules.