Mac 卸载Python3.6

Mac 自带的 Python 已经能够满足我们的需要了，因此很多同学在安装完 Python 之后，又想要将其删除，或者称之为卸载。
对于删除 Python，我们首先要知道其具体都安装了什么，实际上，在安装 Python 时，其自动生成：

1）Python framework，即 Python 框架；
2）Python 应用目录；
3）指向 Python 的连接。

对于 Mac 自带的 Python，其框架目录为：
System/Library/Frameworks/Python.framework

而我们安装的 Python，其（默认）框架目录为：
/Library/Frameworks/Python.framework

接下来，我们就分别（在 Mac 终端进行）删除上面所提到的三部分。

第 1 步，删除框架：

sudo rm -rf /Library/Frameworks/Python.framework/Versions/3.6

第 2步，删除应用目录：

sudo rm -rf "/Applications/Python 3.6"

第 3 步，删除指向 Python 的连接：

cd /usr/local/bin/
ls -l /usr/local/bin | grep '../Library/Frameworks/Python.framework/Versions/3.6' | awk '{print $9}' | tr -d @ | xargs rm

至此，我们已经成功删除 Python 的相关文件，其中3.6为 Python 的版本号。

Mac安装python的一些注意事项

使用brew install python3 会把python安装到/usr/local/Cellar/python/下。尽量不要使用brew方式安装Python

 brew list python
/usr/local/Cellar/python/3.7.7/bin/2to3
/usr/local/Cellar/python/3.7.7/bin/2to3-3.7
/usr/local/Cellar/python/3.7.7/bin/easy_install-3.7
/usr/local/Cellar/python/3.7.7/bin/idle3
/usr/local/Cellar/python/3.7.7/bin/idle3.7
/usr/local/Cellar/python/3.7.7/bin/pip3
/usr/local/Cellar/python/3.7.7/bin/pip3.7
/usr/local/Cellar/python/3.7.7/bin/pydoc3
/usr/local/Cellar/python/3.7.7/bin/pydoc3.7
/usr/local/Cellar/python/3.7.7/bin/python3
/usr/local/Cellar/python/3.7.7/bin/python3-config
/usr/local/Cellar/python/3.7.7/bin/python3.7
/usr/local/Cellar/python/3.7.7/bin/python3.7-config
/usr/local/Cellar/python/3.7.7/bin/python3.7m
/usr/local/Cellar/python/3.7.7/bin/python3.7m-config
/usr/local/Cellar/python/3.7.7/bin/pyvenv
/usr/local/Cellar/python/3.7.7/bin/pyvenv-3.7
/usr/local/Cellar/python/3.7.7/bin/wheel3
/usr/local/Cellar/python/3.7.7/Frameworks/Python.framework/ (2730 files)
/usr/local/Cellar/python/3.7.7/IDLE 3.app/Contents/ (8 files)
/usr/local/Cellar/python/3.7.7/lib/pkgconfig/ (3 files)
/usr/local/Cellar/python/3.7.7/libexec/bin/ (7 files)
/usr/local/Cellar/python/3.7.7/libexec/pip/ (794 files)
/usr/local/Cellar/python/3.7.7/libexec/setuptools/ (365 files)
/usr/local/Cellar/python/3.7.7/libexec/wheel/ (60 files)
/usr/local/Cellar/python/3.7.7/Python Launcher 3.app/Contents/ (16 files)
/usr/local/Cellar/python/3.7.7/share/man/ (2 files)

brew uninstall python3 会把/usr/local/Cellar/下的python删掉
brew uninstall --ignore-dependencies python@3.8

安装 autopep8

chown -R $USER /Users/zhangxm/Library/Python

MacBookPro:vscode zhangxm$ /usr/local/bin/python3 /Users/zhangxm/.vscode/extensions/ms-python.python-2021.3.680753044/pythonFiles/pyvsc-run-isolated.py pip install -U autopep8 --user
Collecting autopep8
  Using cached autopep8-1.5.6-py2.py3-none-any.whl (44 kB)
Collecting pycodestyle>=2.7.0
  Using cached pycodestyle-2.7.0-py2.py3-none-any.whl (41 kB)
Collecting toml
  Using cached toml-0.10.2-py2.py3-none-any.whl (16 kB)
Installing collected packages: toml, pycodestyle, autopep8
  WARNING: The script pycodestyle is installed in '/Users/zhangxm/Library/Python/3.9/bin' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
  WARNING: The script autopep8 is installed in '/Users/zhangxm/Library/Python/3.9/bin' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
Successfully installed autopep8-1.5.6 pycodestyle-2.7.0 toml-0.10.2
MacBookPro:vscode zhangxm$ 

创建python虚拟环境

python3 -m venv .venv