The text introduction in the tutorial has a mistake in indexing

[QB3-11]

In the text section of the third chapter of the documentation, in the string indexing part, -0 is written in the place of -6.

"Note that since -0 is the same as 0, negative indices start from -1"

[AA-Turner]

Fairly sure the reference to 3.1.2 means: https://docs.python.org/3/tutorial/introduction.html#text

[AA-Turner]

There isn't an error here, the relevant part is describing how negative indicies work.

A