Permission denied when trying to install on Mac OSX (10.11.5)

[dzg]

I'm trying to install on Mac using
pip3 install --upgrade --pre acdcli

It fails with
PermissionError: [Errno 13] Permission denied: '/usr/local/bin/acd_cli'

Should I run with sudo?

I also have homebrew installed, maybe that's interfering?

Thanks!

[Grimeton]

Brew suggests changing the ownership of /usr/local/bin to the normal user instead of root. Then it should work. And run the doctor if brew to see if everything's fine.