It looks like your user does not have the permission to install packages in your system (for all users). Here’s how to fix this problem for Linux, macOS and Windows.

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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>

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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>