Could not install packages due to an Environment Error: [Errno 13] Permission denied 解決方案

執行pip install 報錯如下：

Could not install packages due to an Environment Error: [Errno 13] Permission denied: '/usr/local/lib/python3.5/dist-packages/kiwisolver.cpython-35m-x86_64-linux-gnu.so' Consider using the `--user` option or check the permissions.

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解決方案：

Linux / macOS

From your terminal, you can install the package for your user only, like this:

pip install <package> --user

OR

You can use su or sudo from your terminal, to install the package as root:

sudo pip install <package>

Windows

From the Command Prompt, you can install the package for your user only, like this:

pip install <package> --user

OR

You can install the package as Administrator, by following these steps:

1. Right click on the Command Prompt icon.
2. Select the option Run This Program As An Administrator.
3. Run the command pip install <package>