When `interpolation` is given, it should be an Interpolation subclass
instance. It will be used as the handler for option value
- pre-processing when using getters. RawConfigParser object s don't do
+ pre-processing when using getters. RawConfigParser objects don't do
any sort of interpolation, whereas ConfigParser uses an instance of
BasicInterpolation. The library also provides a ``zc.buildbot``
inspired ExtendedInterpolation implementation.