我要评论mac使用homebrew更新了python3.12，删除了以前的版本和pip3安装软件时候报错。
error: externally-managed-environment
× this environment is externally managed
╰─> to install python packages system-wide, try brew install
xyz, where xyz is the package you are trying to
install.
if you wish to install a non-brew-packaged python package,
create a virtual environment using python3 -m venv path/to/venv.
then use path/to/venv/bin/python and path/to/venv/bin/pip.
if you wish to install a non-brew packaged python application,
it may be easiest to use pipx install xyz, which will manage a
virtual environment for you. make sure you have pipx installed.note: if you believe this is a mistake, please contact your python installation or os distribution provider. you can override this, at the risk of breaking your python installation or os, by passing --break-system-packages.
hint: see pep 668 for the detailed specification.
看了很多人说要删除externally-managed这个文件。
在mac系统里，这个文件藏在这里，删除即可。
/usr/local/cellar/python@3.12/3.12.3/frameworks/python.framework/versions/3.12/lib/python3.12
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