Python 记一次更新 pip 失败

概述背景看到warning有点不舒服，便更新了一下pip：(base)C:\Users\Administrator>pipinstall--upgradepipRequirementalreadysatisfied:pipind:\anaconda3\lib\site-packages(21.0)CollectingpipDownloadingpip-21.0.1-py3-none-any.whl(1.5MB)|█████ 背景

看到 warning 有点不舒服，便更新了一下 pip：

(base) C:\Users\administrator>pip install --upgrade pipRequirement already satisfIEd: pip in d:\anaconda3\lib\site-packages (21.0)Collecting pip  Downloading pip-21.0.1-py3-none-any.whl (1.5 MB)     |████████████████████████████████| 1.5 MB 242 kB/sInstalling collected packages: pip  Attempting uninstall: pip    Found existing installation: pip 21.0    Uninstalling pip-21.0:ERROR: Could not install packages due to an EnvironmentError: [WinError 5] 拒绝访问。: 'd:\anaconda3\scripts\pip.exe'ConsIDer using the `--user` option or check the permissions.

因为权限问题导致未能成功更新 pip，而导致此时 pip 已经有所残缺，无法正常使用了。

(base) C:\Users\administrator>pip install --upgrade pipScript file 'D:\Anaconda3\Scripts\pip-script.py' is not present.

解决 'pip-script.py' is not present.：重新安装 pipwindows

下载并运行安装脚本：

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.pypython get-pip.py

linux 需要使用 sudo 执行安装脚本：sudo python get-pip.pypip 会被安装到当前解释器环境中。

(base) C:\Users\administrator>curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current                                 Dload  Upload   Total   Spent    left  Speed100 1882k  100 1882k    0     0   174k      0  0:00:10  0:00:10 --:--:--  104k

(base) C:\Users\administrator>python get-pip.pyCollecting pip  Using cached pip-21.0.1-py3-none-any.whl (1.5 MB)Installing collected packages: pip  Attempting uninstall: pip    Found existing installation: pip 20.3.3    Uninstalling pip-20.3.3:      Successfully uninstalled pip-20.3.3Successfully installed pip-21.0.1

Debian 和 Ubuntu 等

部分 linux 发行版可直接用包管理器安装 pip，如 Debian 和 Ubuntu：

sudo apt-get install python-pip

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