“警告：scheme.data 的值不匹配”当我尝试更新 pip 或安装包时

Question

我有一台 M1 Mac，我刚刚注意到，当我尝试升级pip或安装任何软件包时，会收到一系列警告：

user@mac01 ~ $python3 -m pip install --upgrade pip
WARNING: Value for scheme.platlib does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /opt/homebrew/lib/python3.9/site-packages
sysconfig: /opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages
WARNING: Value for scheme.purelib does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /opt/homebrew/lib/python3.9/site-packages
sysconfig: /opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages
WARNING: Value for scheme.headers does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /opt/homebrew/include/python3.9/UNKNOWN
sysconfig: /opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9/include/python3.9
WARNING: Value for scheme.scripts does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /opt/homebrew/bin
sysconfig: /opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9/bin
WARNING: Value for scheme.data does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /opt/homebrew
sysconfig: /opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9
WARNING: Additional context:
user = False
home = None
root = None
prefix = None
Requirement already satisfied: pip in /opt/homebrew/lib/python3.9/site-packages (21.1)
WARNING: Value for scheme.platlib does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /opt/homebrew/lib/python3.9/site-packages
sysconfig: /opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages
WARNING: Value for scheme.purelib does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /opt/homebrew/lib/python3.9/site-packages
sysconfig: /opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages
WARNING: Value for scheme.headers does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /opt/homebrew/include/python3.9/UNKNOWN
sysconfig: /opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9/include/python3.9
WARNING: Value for scheme.scripts does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /opt/homebrew/bin
sysconfig: /opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9/bin
WARNING: Value for scheme.data does not match. Please report this to <https://github.com/pypa/pip/issues/9617>
distutils: /opt/homebrew
sysconfig: /opt/homebrew/opt/python@3.9/Frameworks/Python.framework/Versions/3.9
WARNING: Additional context:
user = False
home = None
root = None
prefix = None
user@mac01 ~ $

请指教。

Answer 1

（这里是 pip 维护者！）

更新：pip 21.1.1 已经发布了这个修复，通过将这个消息的日志级别从“警告”降低到“调试”。只有--verbose现在运行 pip 的用户才能看到它。

此警告本身无害，并且不会影响任何安装逻辑。您可以安全地使用当前的 pip，暂时忽略此警告。

对于那些想要快速回答以消除此警告的人：python -m pip install pip==21.0.1-您现在可以固定到旧版本的 pip。这是不必要的 IMO，但你可以选择你的毒药（一些警告要忽略，而不是旧的 pip 版本）。

对于那些想要了解更多信息的人：添加此警告是因为我们希望在将来进行转换时显示可能发生的问题。

由于历史原因（呃……Python 2），pip 用于distutils.sysconfig获取有关安装 Python 包的位置的信息。该模块可以在功能上替换为sysconfig在 Python 3.2 中添加到 Python 标准库中的模块。然而，Python 发行商修补它（而不是sysconfig）以提供替代的“默认安装方案”。

PEP 632弃用了 distutils，它将从 Python 标准库中删除。distutils-based 安装是 Python 打包社区一直试图弃用和删除的东西。

我们一直在与许多分销商合作，让他们修复他们的补丁，以便将来的安装可以过渡到sysconfig用作他们的真实来源。此消息是我们“从损坏的 Python 安装的用户那里获取信息”的一部分。您可能已经注意到，Python 安装的配置不同，distutils.sysconfig而且sysconfig比我们预期的要常见得多。:)

Answer 2

降级到早期版本的 pip 为我修复了它：

python -m pip install pip==21.0.1