python errors on sourcing devel/setup.zsh
When I source devel/setup.zsh in a catkin_tools workspace while using zsh I get python errors on Bionic using Melodic:
% source devel/setup.zsh
File "<string>", line 1
from __future__ import print_function
^
SyntaxError: invalid syntax
File "<string>", line 1
from __future__ import print_function
^
Has anyone else seen this? Do you have any idea how to troubleshoot this?