jedi-vim failed to initialize Python

Error: jedi-vim failed to initialize Python: jedi#setup_py_version: Vim(py3file):Traceback (most recent call last): (in function jedi#init_python[3]..<SNR>52_init_python[50]..jedi#setup_py_version, line 18)

If you are using OS X and already installed colorma,
just pip uninstall colorama, then this problem will be solved.

Makes ANSI escape character sequences (for producing colored terminal text and cursor positioning) work under MS Windows.

colorama 0.3.9 : Python Package Index