Errors during "pip3 install -r requirements.txt"

Was walking through the steps and got to this point with the following error:

Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '/Library/Python/3.7'
Consider using the `--user` option or check the permissions.

I'm on MacOS.

Note: Sudo would work here and it seems to be a permissions issue but I just want to point out that a lot of people will likely run into this.