今天用pip install flask时，总因为uninstall blinker失败，报错如下：
```
ERROR: Cannot uninstall 'blinker'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
```
##
解决办法 卸载blinker版本再安装，命令如下： ``` apt-get remove blinker 1.4 sudo -H pip install --ignore-installed -U blinker ``` 最后再次安装flask尝试，终于安装成功了： ···
ubuntu@mn-1:/usr/lib$ pip install flask
Defaulting to user installation because normal site-packages is not writeable
Collecting flask
Downloading Flask-2.3.2-py3-none-any.whl (96 kB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 96.9/96.9 kB 170.6 kB/s eta 0:00:00
Requirement already satisfied: Werkzeug>=2.3.3 in /usr/local/lib/python3.10/dist-packages (from flask) (2.3.6)
Requirement already satisfied: Jinja2>=3.1.2 in /usr/local/lib/python3.10/dist-packages (from flask) (3.1.2)
Requirement already satisfied: itsdangerous>=2.1.2 in /usr/local/lib/python3.10/dist-packages (from flask) (2.1.2)
Requirement already satisfied: click>=8.1.3 in /usr/local/lib/python3.10/dist-packages (from flask) (8.1.6)
Requirement already satisfied: blinker>=1.6.2 in /usr/local/lib/python3.10/dist-packages (from flask) (1.6.2)
Requirement already satisfied: MarkupSafe>=2.0 in /usr/local/lib/python3.10/dist-packages (from Jinja2>=3.1.2->flask) (2.1.3)
DEPRECATION: distro-info 1.1build1 has a non-standard version number. pip 23.3 will enforce this behaviour change. A possible replacement is to upgrade to a newer version of distro-info or contact the author to suggest that they release a version with a conforming version number. Discussion can be found at https://github.com/pypa/pip/issues/12063
DEPRECATION: python-debian 0.1.43ubuntu1 has a non-standard version number. pip 23.3 will enforce this behaviour change. A possible replacement is to upgrade to a newer version of python-debian or contact the author to suggest that they release a version with a conforming version number. Discussion can be found at https://github.com/pypa/pip/issues/12063
Installing collected packages: flask
WARNING: The script flask is installed in '/home/ubuntu/.local/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 flask-2.3.2
···