PYTHON: _imagingft C module is not installed

PYTHON: _imagingft C module is not installed

after installing PIL 1.1.7 and using django-simple-captha there is error:

ImportError: The _imagingft C module is not installed

The problem was that you need to install dev package for FreeType

apt-get install libfreetype6-dev

After that re-install PIL:

pip install --upgrade pil