Lokaltog/powerline — pull request #641 by aschrab (2013-08-20 13:42:00+00:00)
Title: Option to suppress error in python-less vim

If the g:powerline_no_python_error variable is set don't issue an error
message even if vim doesn't have the required Python support. This
allows a common set of configuration files to be used across systems
where some of the copies of vim don't meet the requirements.