python network_error ai_generated true

错误：找不到满足需求 package==1.2.3 的版本（可用版本：无） 错误：找不到匹配的分发包

ERROR: Cannot find a version of package that satisfies the requirement package==1.2.3 (from versions: none) ERROR: No matching distribution found for package==1.2.3

ID: python/pip-conflicting-extra-index-url

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80%修复率
84%置信度
0证据数
2025-09-12首次发现

版本兼容性

版本状态引入弃用备注
3.x active — — —

根因分析

--extra-index-url 指向不托管所请求包/版本的私有索引，且 pip 不会为该包名回退到 PyPI。

English

An --extra-index-url points to a private index that does not host the requested package/version, and pip does not fall back to PyPI for that name.

generic

解决方案

  1. 88% 成功率 
    Use both indexes explicitly: pip install --index-url https://pypi.org/simple --extra-index-url https://private.example.com/simple package
  2. 85% 成功率 
    Verify the private index hosts the version: curl -s https://private.example.com/simple/package/ | grep 1.2.3
  3. 90% 成功率 
    Publish the missing version to the private index or pin to a version it hosts

无效尝试

常见但无效的做法:

  1. 90% 失败

    Trusted-host only affects TLS verification; the package is simply absent from the index.

  2. 80% 失败

    Replacing the index removes PyPI access entirely, so public deps also fail.

  3. 95% 失败

    The package is not present in the index; retries do not change availability.