Added an inspection tool to lesson 4.
Added an inspection tool to lesson 4.

razzius/PyClassLessons,noisebridge/PythonClass,noisebridge/PythonClass,PyClass/PyClassLessons,razzius/PyClassLessons,razzius/PyClassLessons,razzius/PyClassLessons,noisebridge/PythonClass,noisebridge/PythonClass,PyClass/PyClassLessons,PyClass/PyClassLessons