Perhaps they were talking about the explicit `u` prefix for Unicode strings? This was present in 2.7 but missing from 3.x until 3.3 [0]. [0] https://www.python

Perhaps they were talking about the explicit `u` prefix for Unicode strings? This was present in 2.7 but missing from 3.x until 3.3 [0]. [0] https://www.python.org/dev/peps/pep-0414/ https://www.python.org/dev/peps/pep-0414/