python install_error ai_generated true

不支持原生的 async def 函数。 你需要为异步框架安装合适的插件，例如： - anyio - pytest-asyncio

async def functions are not natively supported. You need to install a suitable plugin for your async framework, for example: - anyio - pytest-asyncio

ID: python/pytest-asyncio-not-installed

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80%修复率
90%置信度
0证据数
2024-02-08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

在没有异步插件的情况下，pytest 无法运行 `async def` 测试函数。测试会被收集，但 pytest 拒绝执行，因为没有管理事件循环。

English

Pytest cannot run `async def` test functions without an async plugin. The test is collected but pytest refuses to execute it because the event loop is not managed.

generic

解决方案

  1. 98% 成功率 
    Install the plugin and enable auto mode:

pip install pytest-asyncio

# pytest.ini
[pytest]
asyncio_mode = auto
  2. 90% 成功率 
    Use anyio instead:

pip install anyio

# test file
import pytest

@pytest.mark.anyio
async def test_thing():
    ...

无效尝试

常见但无效的做法:

  1. 90% 失败

    The test function itself is still async, so pytest still rejects it during collection.

  2. 95% 失败

    The setting is only read by pytest-asyncio; without the plugin installed the option is ignored and the error persists.