Issue #6354 continued:  reword confusing tutorial note on the (no-longer existing) difference between str(8/5) and repr(8/5).
Issue #6354 continued:  reword confusing tutorial note on the (no-longer
existing) difference between str(8/5) and repr(8/5).

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