Re-factor:  Use a RawConfigParser base class and make ConfigParser a derived class that adds the ugly string interpolation code.  In the process, changed all "__" methods and instance variables to "_".
Re-factor:  Use a RawConfigParser base class and make ConfigParser a
derived class that adds the ugly string interpolation code.  In the
process, changed all "__" methods and instance variables to "_".

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator